diff --git a/matrix_sdk/Cargo.toml b/matrix_sdk/Cargo.toml
index 608f6c57..76e4283f 100644
--- a/matrix_sdk/Cargo.toml
+++ b/matrix_sdk/Cargo.toml
@@ -72,7 +72,7 @@ async-trait = "0.1.41"
 async-std = { version = "1.6.5", features = ["unstable"] }
 dirs = "3.0.1"
 matrix-sdk-test = { version = "0.1.0", path = "../matrix_sdk_test" }
-tokio = { version = "0.2.22", features = ["rt-threaded", "macros"] }
+tokio = { version = "0.2.22", default-features = false, features = ["rt-threaded", "macros"] }
 serde_json = "1.0.59"
 tracing-subscriber = "0.2.13"
 tempfile = "3.1.0"
diff --git a/matrix_sdk/examples/command_bot.rs b/matrix_sdk/examples/command_bot.rs
index 4f2d9fea..8c12fd5a 100644
--- a/matrix_sdk/examples/command_bot.rs
+++ b/matrix_sdk/examples/command_bot.rs
@@ -38,12 +38,8 @@ impl EventEmitter for CommandBot {
             };
 
             if msg_body.contains("!party") {
-                let content = AnyMessageEventContent::RoomMessage(MessageEventContent::Text(
-                    TextMessageEventContent {
-                        body: "🎉🎊🥳 let's PARTY!! 🥳🎊🎉".to_string(),
-                        formatted: None,
-                        relates_to: None,
-                    },
+                let content = AnyMessageEventContent::RoomMessage(MessageEventContent::text_plain(
+                    "🎉🎊🥳 let's PARTY!! 🥳🎊🎉",
                 ));
                 // we clone here to hold the lock for as little time as possible.
                 let room_id = room.read().await.room_id.clone();
diff --git a/matrix_sdk/src/client.rs b/matrix_sdk/src/client.rs
index 7abfa5df..f5d971c0 100644
--- a/matrix_sdk/src/client.rs
+++ b/matrix_sdk/src/client.rs
@@ -1467,10 +1467,10 @@ impl Client {
         sync_settings: SyncSettings<'_>,
     ) -> Result<sync_events::Response> {
         let request = assign!(sync_events::Request::new(), {
-            filter: sync_settings.filter,
+            filter: sync_settings.filter.as_ref(),
             since: sync_settings.token.as_deref(),
             full_state: sync_settings.full_state,
-            set_presence: PresenceState::Online,
+            set_presence: &PresenceState::Online,
             timeout: sync_settings.timeout,
         });
 
@@ -1561,13 +1561,11 @@ impl Client {
     #[instrument(skip(callback))]
     pub async fn sync_with_callback<C>(
         &self,
-        sync_settings: SyncSettings<'_>,
+        mut sync_settings: SyncSettings<'_>,
         callback: impl Fn(sync_events::Response) -> C,
     ) where
         C: Future<Output = LoopCtrl>,
     {
-        let mut sync_settings = sync_settings;
-        let filter = sync_settings.filter;
         let mut last_sync_time: Option<Instant> = None;
 
         if sync_settings.token.is_none() {
@@ -1575,6 +1573,7 @@ impl Client {
         }
 
         loop {
+            let filter = sync_settings.filter.clone();
             let response = self.sync_once(sync_settings.clone()).await;
 
             let response = match response {
@@ -1651,8 +1650,8 @@ impl Client {
                     .await
                     .expect("No sync token found after initial sync"),
             );
-            if let Some(f) = filter.as_ref() {
-                sync_settings = sync_settings.filter(*f);
+            if let Some(f) = filter {
+                sync_settings = sync_settings.filter(f);
             }
         }
     }
@@ -1895,12 +1894,12 @@ impl Client {
 
         let (request, signature_request) = olm.bootstrap_cross_signing(false).await?;
 
-        let request = UploadSigningKeysRequest {
+        let request = assign!(UploadSigningKeysRequest::new(), {
             auth: auth_data,
             master_key: request.master_key,
             self_signing_key: request.self_signing_key,
             user_signing_key: request.user_signing_key,
-        };
+        });
 
         self.send(request).await?;
         self.send(signature_request).await?;
@@ -2107,10 +2106,7 @@ mod test {
         },
         assign,
         directory::Filter,
-        events::{
-            room::message::{MessageEventContent, TextMessageEventContent},
-            AnyMessageEventContent,
-        },
+        events::{room::message::MessageEventContent, AnyMessageEventContent},
         identifiers::{event_id, room_id, user_id},
         thirdparty,
     };
@@ -2655,13 +2651,8 @@ mod test {
 
         let room_id = room_id!("!testroom:example.org");
 
-        let content = AnyMessageEventContent::RoomMessage(MessageEventContent::Text(
-            TextMessageEventContent {
-                body: "Hello world".to_owned(),
-                relates_to: None,
-                formatted: None,
-            },
-        ));
+        let content =
+            AnyMessageEventContent::RoomMessage(MessageEventContent::text_plain("Hello world"));
         let txn_id = Uuid::new_v4();
         let response = client
             .room_send(&room_id, content, Some(txn_id))
diff --git a/matrix_sdk_base/Cargo.toml b/matrix_sdk_base/Cargo.toml
index 5eb04c64..530ca9a3 100644
--- a/matrix_sdk_base/Cargo.toml
+++ b/matrix_sdk_base/Cargo.toml
@@ -25,7 +25,7 @@ docs = ["encryption", "sqlite_cryptostore", "messages"]
 
 [dependencies]
 async-trait = "0.1.41"
-serde = "1.0.116"
+serde = "1.0.117"
 serde_json = "1.0.59"
 zeroize = "1.1.1"
 tracing = "0.1.21"
@@ -51,7 +51,7 @@ tempfile = "3.1.0"
 mockito = "0.27.0"
 
 [target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
-tokio = { version = "0.2.22", features = ["rt-threaded", "macros"] }
+tokio = { version = "0.2.22", default-features = false, features = ["rt-threaded", "macros"] }
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
 wasm-bindgen-test = "0.3.18"
diff --git a/matrix_sdk_base/src/client.rs b/matrix_sdk_base/src/client.rs
index e4cae5bc..55142e98 100644
--- a/matrix_sdk_base/src/client.rs
+++ b/matrix_sdk_base/src/client.rs
@@ -2387,97 +2387,6 @@ mod test {
         assert!(passed.load(Ordering::SeqCst))
     }
 
-    #[async_test]
-    async fn test_unrecognized_custom_event() {
-        use super::*;
-
-        use crate::{EventEmitter, SyncRoom};
-        use matrix_sdk_common::{api::r0::sync::sync_events, locks::RwLock};
-        use std::sync::{
-            atomic::{AtomicBool, Ordering},
-            Arc,
-        };
-
-        struct EE(Arc<AtomicBool>);
-        #[async_trait]
-        impl EventEmitter for EE {
-            async fn on_custom_event(&self, room: SyncRoom, event: &CustomEvent<'_>) {
-                if let SyncRoom::Joined(_) = room {
-                    if let CustomEvent::Message(custom) = event {
-                        if custom.content.event_type == "m.reaction"
-                            && custom.content.json.get("m.relates_to").is_some()
-                        {
-                            self.0.swap(true, Ordering::SeqCst);
-                        }
-                    }
-                }
-            }
-        }
-
-        let room_id = get_room_id();
-        let passed = Arc::new(AtomicBool::default());
-        let emitter = EE(Arc::clone(&passed));
-        let mut client = get_client().await;
-
-        client.event_emitter = Arc::new(RwLock::new(Some(Box::new(emitter))));
-
-        // This is needed other wise the `EventBuilder` goes through a de/ser cycle and the `prev_content` is lost.
-        let event: &serde_json::Value = &test_json::REACTION;
-
-        let mut joined_rooms: HashMap<RoomId, serde_json::Value> = HashMap::new();
-        let joined_room = serde_json::json!({
-            "summary": {},
-            "account_data": {
-                "events": [],
-            },
-            "ephemeral": {
-                "events": [],
-            },
-            "state": {
-                "events": [],
-            },
-            "timeline": {
-                "events": vec![ event ],
-                "limited": true,
-                "prev_batch": "t392-516_47314_0_7_1_1_1_11444_1"
-            },
-            "unread_notifications": {
-                "highlight_count": 0,
-                "notification_count": 11
-            }
-        });
-        joined_rooms.insert(room_id, joined_room);
-
-        let empty_room: HashMap<RoomId, serde_json::Value> = HashMap::new();
-        let body = serde_json::json!({
-            "device_one_time_keys_count": {},
-            "next_batch": "s526_47314_0_7_1_1_1_11444_1",
-            "device_lists": {
-                "changed": [],
-                "left": []
-            },
-            "rooms": {
-                "invite": empty_room,
-                "join": joined_rooms,
-                "leave": empty_room,
-            },
-            "to_device": {
-                "events": []
-            },
-            "presence": {
-                "events": []
-            }
-        });
-        let response = http::Response::builder()
-            .body(serde_json::to_vec(&body).unwrap())
-            .unwrap();
-        let mut sync = sync_events::Response::try_from(response).unwrap();
-
-        client.receive_sync_response(&mut sync).await.unwrap();
-
-        assert!(passed.load(Ordering::SeqCst))
-    }
-
     #[cfg(feature = "messages")]
     #[async_test]
     async fn message_queue_redaction_event_store_deser() {
diff --git a/matrix_sdk_base/src/models/room.rs b/matrix_sdk_base/src/models/room.rs
index 6892c50a..0b65abcb 100644
--- a/matrix_sdk_base/src/models/room.rs
+++ b/matrix_sdk_base/src/models/room.rs
@@ -934,7 +934,7 @@ impl Room {
                 member.currently_active = *currently_active;
                 member.display_name = displayname.clone();
                 member.last_active_ago = *last_active_ago;
-                member.presence = Some(*presence);
+                member.presence = Some(presence.clone());
                 member.status_msg = status_msg.clone();
 
                 true
@@ -1091,6 +1091,7 @@ impl Describe for MembershipState {
             Self::Join => "is a member of",
             Self::Knock => "is requesting access to",
             Self::Leave => "has left",
+            _ => "unhandled case of MembershipState",
         }
         .to_string()
     }
@@ -1123,6 +1124,7 @@ impl Describe for MembershipChange {
             Self::None => "did nothing in",
             Self::NotImplemented => "NOT IMPLEMENTED",
             Self::Error => "ERROR",
+            _ => "unhandled case of MembershipChange",
         }
         .to_string()
     }
diff --git a/matrix_sdk_common/Cargo.toml b/matrix_sdk_common/Cargo.toml
index b9fc3024..d348a0d1 100644
--- a/matrix_sdk_common/Cargo.toml
+++ b/matrix_sdk_common/Cargo.toml
@@ -21,17 +21,17 @@ js_int = "0.1.9"
 [dependencies.ruma]
 version = "0.0.1"
 git = "https://github.com/ruma/ruma"
-rev = "c0eee624311c12ee9c3eb14737988e3f0a60fb3f"
-features = ["client-api", "unstable-pre-spec", "unstable-exhaustive-types"]
+rev = "48d1c9747561686e1c5627405780f6de01ee17b1"
+features = ["client-api", "unstable-pre-spec"]
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies]
-uuid = { version = "0.8.1", features = ["v4", "serde"] }
+uuid = { version = "0.8.1", default-features = false, features = ["v4", "serde"] }
 
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies.tokio]
 version = "0.2.22"
 default-features = false
-features = ["sync", "time", "fs"]
+features = ["sync"]
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
 futures-locks = { version = "0.6.0", default-features = false }
-uuid = { version = "0.8.1", features = ["v4", "wasm-bindgen"] }
+uuid = { version = "0.8.1", default-features = false, features = ["v4", "wasm-bindgen"] }
diff --git a/matrix_sdk_common_macros/Cargo.toml b/matrix_sdk_common_macros/Cargo.toml
index fab5eea7..d8219ac7 100644
--- a/matrix_sdk_common_macros/Cargo.toml
+++ b/matrix_sdk_common_macros/Cargo.toml
@@ -14,5 +14,5 @@ version = "0.1.0"
 proc-macro = true
 
 [dependencies]
-syn = "1.0.44"
+syn = { version = "1.0.45", features = ["proc-macro"], default-features = false }
 quote = "1.0.7"
diff --git a/matrix_sdk_crypto/Cargo.toml b/matrix_sdk_crypto/Cargo.toml
index 4e7ee157..927d104b 100644
--- a/matrix_sdk_crypto/Cargo.toml
+++ b/matrix_sdk_crypto/Cargo.toml
@@ -27,9 +27,8 @@ matrix-sdk-common = { version = "0.1.0", path = "../matrix_sdk_common" }
 
 olm-rs = { version = "1.0.0", features = ["serde"] }
 getrandom = "0.2.0"
-serde = { version = "1.0.116", features = ["derive", "rc"] }
+serde = { version = "1.0.117", features = ["derive", "rc"] }
 serde_json = "1.0.59"
-cjson = "0.1.1"
 zeroize = { version = "1.1.1", features = ["zeroize_derive"] }
 url = "2.1.1"
 
@@ -40,17 +39,12 @@ atomic = "0.5.0"
 dashmap = "3.11.10"
 sha2 = "0.9.1"
 aes-gcm = "0.7.0"
-aes-ctr = "0.5.0"
-pbkdf2 = { version = "0.5.0", default-features = false }
-hmac = "0.9.0"
+aes-ctr = "0.6.0"
+pbkdf2 = { version = "0.6.0", default-features = false }
+hmac = "0.10.1"
 base64 = "0.13.0"
 byteorder = "1.3.4"
 
-[dependencies.tracing-futures]
-version = "0.2.4"
-default-features = false
-features = ["std", "std-future"]
-
 [target.'cfg(not(target_arch = "wasm32"))'.dependencies.sqlx]
 git = "https://github.com/launchbadge/sqlx/"
 rev = "fd25a7530cf087e1529553ff854f192738db3461"
@@ -59,7 +53,7 @@ default-features = false
 features = ["runtime-tokio", "sqlite", "macros"]
 
 [dev-dependencies]
-tokio = { version = "0.2.22", features = ["rt-threaded", "macros"] }
+tokio = { version = "0.2.22", default-features = false, features = ["rt-threaded", "macros"] }
 futures = "0.3.6"
 proptest = "0.10.1"
 serde_json = "1.0.59"
diff --git a/matrix_sdk_crypto/src/error.rs b/matrix_sdk_crypto/src/error.rs
index 1692bd54..6d9aacdc 100644
--- a/matrix_sdk_crypto/src/error.rs
+++ b/matrix_sdk_crypto/src/error.rs
@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use cjson::Error as CjsonError;
 use matrix_sdk_common::identifiers::{DeviceId, Error as IdentifierError, UserId};
 use olm_rs::errors::{OlmGroupSessionError, OlmSessionError};
 use serde_json::Error as SerdeError;
@@ -145,14 +144,11 @@ pub enum SignatureError {
     #[error("the provided JSON object doesn't contain a signatures field")]
     NoSignatureFound,
 
-    #[error("the provided JSON object can't be converted to a canonical representation")]
-    CanonicalJsonError(CjsonError),
+    #[error("the signature didn't match the provided key")]
+    VerificationError,
 
     #[error(transparent)]
     JsonError(#[from] SerdeError),
-
-    #[error("the signature didn't match the provided key")]
-    VerificationError,
 }
 
 #[derive(Error, Debug)]
@@ -177,9 +173,3 @@ pub(crate) enum SessionCreationError {
     #[error("Error creating new Olm session for {0} {1}: {2:?}")]
     OlmError(UserId, Box<DeviceId>, OlmSessionError),
 }
-
-impl From<CjsonError> for SignatureError {
-    fn from(error: CjsonError) -> Self {
-        Self::CanonicalJsonError(error)
-    }
-}
diff --git a/matrix_sdk_crypto/src/file_encryption/attachments.rs b/matrix_sdk_crypto/src/file_encryption/attachments.rs
index 9fbaa6ff..675e9ed7 100644
--- a/matrix_sdk_crypto/src/file_encryption/attachments.rs
+++ b/matrix_sdk_crypto/src/file_encryption/attachments.rs
@@ -27,7 +27,7 @@ use matrix_sdk_common::events::room::JsonWebKey;
 use getrandom::getrandom;
 
 use aes_ctr::{
-    stream_cipher::{NewStreamCipher, SyncStreamCipher},
+    cipher::{NewStreamCipher, SyncStreamCipher},
     Aes256Ctr,
 };
 use base64::DecodeError;
diff --git a/matrix_sdk_crypto/src/file_encryption/key_export.rs b/matrix_sdk_crypto/src/file_encryption/key_export.rs
index dcbdd440..f41d5825 100644
--- a/matrix_sdk_crypto/src/file_encryption/key_export.rs
+++ b/matrix_sdk_crypto/src/file_encryption/key_export.rs
@@ -20,7 +20,7 @@ use byteorder::{BigEndian, ReadBytesExt};
 use getrandom::getrandom;
 
 use aes_ctr::{
-    stream_cipher::{NewStreamCipher, SyncStreamCipher},
+    cipher::{NewStreamCipher, SyncStreamCipher},
     Aes256Ctr,
 };
 use hmac::{Hmac, Mac, NewMac};
diff --git a/matrix_sdk_crypto/src/identities/device.rs b/matrix_sdk_crypto/src/identities/device.rs
index 568d80f9..4dc44298 100644
--- a/matrix_sdk_crypto/src/identities/device.rs
+++ b/matrix_sdk_crypto/src/identities/device.rs
@@ -60,7 +60,7 @@ use crate::{
 pub struct ReadOnlyDevice {
     user_id: Arc<UserId>,
     device_id: Arc<Box<DeviceId>>,
-    algorithms: Arc<Vec<EventEncryptionAlgorithm>>,
+    algorithms: Arc<[EventEncryptionAlgorithm]>,
     keys: Arc<BTreeMap<DeviceKeyId, String>>,
     pub(crate) signatures: Arc<BTreeMap<UserId, BTreeMap<DeviceKeyId, String>>>,
     display_name: Arc<Option<String>>,
@@ -257,7 +257,7 @@ impl ReadOnlyDevice {
             display_name: Arc::new(display_name),
             trust_state: Arc::new(Atomic::new(trust_state)),
             signatures: Arc::new(signatures),
-            algorithms: Arc::new(algorithms),
+            algorithms: algorithms.into(),
             keys: Arc::new(keys),
             deleted: Arc::new(AtomicBool::new(false)),
         }
@@ -419,7 +419,7 @@ impl ReadOnlyDevice {
 
         let display_name = Arc::new(device_keys.unsigned.device_display_name.clone());
 
-        self.algorithms = Arc::new(device_keys.algorithms.clone());
+        self.algorithms = device_keys.algorithms.as_slice().into();
         self.keys = Arc::new(device_keys.keys.clone());
         self.signatures = Arc::new(device_keys.signatures.clone());
         self.display_name = display_name;
@@ -443,14 +443,13 @@ impl ReadOnlyDevice {
     }
 
     pub(crate) fn as_device_keys(&self) -> DeviceKeys {
-        DeviceKeys {
-            user_id: self.user_id().clone(),
-            device_id: self.device_id().into(),
-            keys: self.keys().clone(),
-            algorithms: self.algorithms().to_vec(),
-            signatures: self.signatures().to_owned(),
-            unsigned: Default::default(),
-        }
+        DeviceKeys::new(
+            self.user_id().clone(),
+            self.device_id().into(),
+            self.algorithms().to_vec(),
+            self.keys().clone(),
+            self.signatures().to_owned(),
+        )
     }
 
     pub(crate) fn as_signature_message(&self) -> Value {
@@ -467,7 +466,8 @@ impl ReadOnlyDevice {
         &self,
         device_keys: &DeviceKeys,
     ) -> Result<(), SignatureError> {
-        self.is_signed_by_device(&mut json!(&device_keys))
+        let mut device_keys = serde_json::to_value(device_keys).unwrap();
+        self.is_signed_by_device(&mut device_keys)
     }
 
     pub(crate) fn verify_one_time_key(
@@ -501,7 +501,7 @@ impl TryFrom<&DeviceKeys> for ReadOnlyDevice {
         let device = Self {
             user_id: Arc::new(device_keys.user_id.clone()),
             device_id: Arc::new(device_keys.device_id.clone()),
-            algorithms: Arc::new(device_keys.algorithms.clone()),
+            algorithms: device_keys.algorithms.as_slice().into(),
             signatures: Arc::new(device_keys.signatures.clone()),
             keys: Arc::new(device_keys.keys.clone()),
             display_name: Arc::new(device_keys.unsigned.device_display_name.clone()),
diff --git a/matrix_sdk_crypto/src/key_request.rs b/matrix_sdk_crypto/src/key_request.rs
index afb07840..55f5b569 100644
--- a/matrix_sdk_crypto/src/key_request.rs
+++ b/matrix_sdk_crypto/src/key_request.rs
@@ -25,7 +25,7 @@ use serde::{Deserialize, Serialize};
 use serde_json::value::to_raw_value;
 use std::{collections::BTreeMap, sync::Arc};
 use thiserror::Error;
-use tracing::{error, info, instrument, trace, warn};
+use tracing::{error, info, trace, warn};
 
 use matrix_sdk_common::{
     api::r0::to_device::DeviceIdOrAllDevices,
@@ -293,12 +293,11 @@ impl KeyRequestMachine {
     }
 
     /// Handle a single incoming key request.
-    #[instrument]
     async fn handle_key_request(
         &self,
         event: &ToDeviceEvent<RoomKeyRequestEventContent>,
     ) -> OlmResult<Option<Session>> {
-        let key_info = match event.content.action {
+        let key_info = match &event.content.action {
             Action::Request => {
                 if let Some(info) = &event.content.body {
                     info
@@ -313,6 +312,10 @@ impl KeyRequestMachine {
             }
             // We ignore cancellations here since there's nothing to serve.
             Action::CancelRequest => return Ok(None),
+            action => {
+                warn!("Unknown room key request action: {:?}", action);
+                return Ok(None);
+            }
         };
 
         let session = self
diff --git a/matrix_sdk_crypto/src/machine.rs b/matrix_sdk_crypto/src/machine.rs
index 16821b18..83b5939a 100644
--- a/matrix_sdk_crypto/src/machine.rs
+++ b/matrix_sdk_crypto/src/machine.rs
@@ -17,8 +17,7 @@ use std::path::Path;
 use std::{collections::BTreeMap, mem, sync::Arc};
 
 use dashmap::DashMap;
-use matrix_sdk_common::locks::Mutex;
-use tracing::{debug, error, info, instrument, trace, warn};
+use tracing::{debug, error, info, trace, warn};
 
 use matrix_sdk_common::{
     api::r0::{
@@ -40,6 +39,7 @@ use matrix_sdk_common::{
         DeviceId, DeviceIdBox, DeviceKeyAlgorithm, EventEncryptionAlgorithm, RoomId, UserId,
     },
     js_int::UInt,
+    locks::Mutex,
     uuid::Uuid,
     Raw,
 };
@@ -262,7 +262,6 @@ impl OlmMachine {
     ///
     /// * `device_id` - The unique id of the device that owns this machine.
     #[cfg(feature = "sqlite_cryptostore")]
-    #[instrument(skip(path, passphrase))]
     #[cfg_attr(feature = "docs", doc(cfg(r#sqlite_cryptostore)))]
     pub async fn new_with_default_store(
         user_id: &UserId,
@@ -460,7 +459,6 @@ impl OlmMachine {
     ///
     /// * `response` - The keys upload response of the request that the client
     /// performed.
-    #[instrument]
     async fn receive_keys_upload_response(
         &self,
         response: &upload_keys::Response,
@@ -777,7 +775,6 @@ impl OlmMachine {
     /// * `response` - The sync latest sync response.
     ///
     /// [`decrypt_room_event`]: #method.decrypt_room_event
-    #[instrument(skip(response))]
     pub async fn receive_sync_response(&self, response: &mut SyncResponse) -> OlmResult<()> {
         // Remove verification objects that have expired or are done.
         self.verification_machine.garbage_collect();
diff --git a/matrix_sdk_crypto/src/olm/account.rs b/matrix_sdk_crypto/src/olm/account.rs
index 150bef6c..ed57b893 100644
--- a/matrix_sdk_crypto/src/olm/account.rs
+++ b/matrix_sdk_crypto/src/olm/account.rs
@@ -52,7 +52,7 @@ use olm_rs::{
 };
 
 use crate::{
-    error::{EventError, OlmResult, SessionCreationError, SignatureError},
+    error::{EventError, OlmResult, SessionCreationError},
     identities::ReadOnlyDevice,
     requests::UploadSigningKeysRequest,
     store::Store,
@@ -651,7 +651,15 @@ impl ReadOnlyAccount {
     /// uploaded.
     pub(crate) async fn device_keys(&self) -> DeviceKeys {
         let mut device_keys = self.unsigned_device_keys();
-        let jsond_device_keys = serde_json::to_value(&device_keys).unwrap();
+
+        // Create a copy of the device keys containing only fields that will
+        // get signed.
+        let json_device_keys = json!({
+            "user_id": device_keys.user_id,
+            "device_id": device_keys.device_id,
+            "algorithms": device_keys.algorithms,
+            "keys": device_keys.keys,
+        });
 
         device_keys
             .signatures
@@ -659,9 +667,7 @@ impl ReadOnlyAccount {
             .or_insert_with(BTreeMap::new)
             .insert(
                 DeviceKeyId::from_parts(DeviceKeyAlgorithm::Ed25519, &self.device_id),
-                self.sign_json(jsond_device_keys)
-                    .await
-                    .expect("Can't sign own device keys"),
+                self.sign_json(&json_device_keys).await,
             );
 
         device_keys
@@ -688,13 +694,8 @@ impl ReadOnlyAccount {
     /// # Panic
     ///
     /// Panics if the json value can't be serialized.
-    pub async fn sign_json(&self, mut json: Value) -> Result<String, SignatureError> {
-        let json_object = json.as_object_mut().ok_or(SignatureError::NotAnObject)?;
-        let _ = json_object.remove("unsigned");
-        let _ = json_object.remove("signatures");
-
-        let canonical_json = cjson::to_string(&json)?;
-        Ok(self.sign(&canonical_json).await)
+    pub async fn sign_json(&self, json: &Value) -> String {
+        self.sign(&json.to_string()).await
     }
 
     pub(crate) async fn signed_one_time_keys_helper(
@@ -708,10 +709,7 @@ impl ReadOnlyAccount {
                 "key": key,
             });
 
-            let signature = self
-                .sign_json(key_json)
-                .await
-                .expect("Can't sign own one-time keys");
+            let signature = self.sign_json(&key_json).await;
 
             let mut signature_map = BTreeMap::new();
 
@@ -779,8 +777,8 @@ impl ReadOnlyAccount {
             device_id: self.device_id.clone(),
             our_identity_keys: self.identity_keys.clone(),
             inner: Arc::new(Mutex::new(session)),
-            session_id: Arc::new(session_id),
-            sender_key: Arc::new(their_identity_key.to_owned()),
+            session_id: session_id.into(),
+            sender_key: their_identity_key.into(),
             creation_time: Arc::new(now),
             last_use_time: Arc::new(now),
         })
@@ -884,8 +882,8 @@ impl ReadOnlyAccount {
             device_id: self.device_id.clone(),
             our_identity_keys: self.identity_keys.clone(),
             inner: Arc::new(Mutex::new(session)),
-            session_id: Arc::new(session_id),
-            sender_key: Arc::new(their_identity_key.to_owned()),
+            session_id: session_id.into(),
+            sender_key: their_identity_key.into(),
             creation_time: Arc::new(now),
             last_use_time: Arc::new(now),
         })
diff --git a/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs b/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs
index 9e8a5c11..a7249563 100644
--- a/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs
+++ b/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs
@@ -56,8 +56,8 @@ use crate::error::{EventError, MegolmResult};
 #[derive(Clone)]
 pub struct InboundGroupSession {
     inner: Arc<Mutex<OlmInboundGroupSession>>,
-    session_id: Arc<String>,
-    pub(crate) sender_key: Arc<String>,
+    session_id: Arc<str>,
+    pub(crate) sender_key: Arc<str>,
     pub(crate) signing_key: Arc<BTreeMap<DeviceKeyAlgorithm, String>>,
     pub(crate) room_id: Arc<RoomId>,
     forwarding_chains: Arc<Mutex<Option<Vec<String>>>>,
@@ -95,8 +95,8 @@ impl InboundGroupSession {
 
         Ok(InboundGroupSession {
             inner: Arc::new(Mutex::new(session)),
-            session_id: Arc::new(session_id),
-            sender_key: Arc::new(sender_key.to_owned()),
+            session_id: session_id.into(),
+            sender_key: sender_key.to_owned().into(),
             signing_key: Arc::new(keys),
             room_id: Arc::new(room_id.clone()),
             forwarding_chains: Arc::new(Mutex::new(None)),
@@ -145,8 +145,8 @@ impl InboundGroupSession {
 
         Ok(InboundGroupSession {
             inner: Arc::new(Mutex::new(session)),
-            session_id: Arc::new(content.session_id.clone()),
-            sender_key: Arc::new(content.sender_key.clone()),
+            session_id: content.session_id.as_str().into(),
+            sender_key: content.sender_key.as_str().into(),
             signing_key: Arc::new(sender_claimed_key),
             room_id: Arc::new(content.room_id.clone()),
             forwarding_chains: Arc::new(Mutex::new(Some(forwarding_chains))),
@@ -225,8 +225,8 @@ impl InboundGroupSession {
 
         Ok(InboundGroupSession {
             inner: Arc::new(Mutex::new(session)),
-            session_id: Arc::new(session_id),
-            sender_key: Arc::new(pickle.sender_key),
+            session_id: session_id.into(),
+            sender_key: pickle.sender_key.into(),
             signing_key: Arc::new(pickle.signing_key),
             room_id: Arc::new(pickle.room_id),
             forwarding_chains: Arc::new(Mutex::new(pickle.forwarding_chains)),
@@ -377,8 +377,8 @@ impl TryFrom<ExportedRoomKey> for InboundGroupSession {
 
         Ok(InboundGroupSession {
             inner: Arc::new(Mutex::new(session)),
-            session_id: Arc::new(key.session_id),
-            sender_key: Arc::new(key.sender_key),
+            session_id: key.session_id.into(),
+            sender_key: key.sender_key.into(),
             signing_key: Arc::new(key.sender_claimed_keys),
             room_id: Arc::new(key.room_id),
             forwarding_chains: Arc::new(Mutex::new(forwarding_chains)),
diff --git a/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs b/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs
index d2daab7e..adecc4e1 100644
--- a/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs
+++ b/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs
@@ -99,7 +99,7 @@ pub struct OutboundGroupSession {
     inner: Arc<Mutex<OlmOutboundGroupSession>>,
     device_id: Arc<DeviceIdBox>,
     account_identity_keys: Arc<IdentityKeys>,
-    session_id: Arc<String>,
+    session_id: Arc<str>,
     room_id: Arc<RoomId>,
     pub(crate) creation_time: Arc<Instant>,
     message_count: Arc<AtomicU64>,
@@ -140,7 +140,7 @@ impl OutboundGroupSession {
             room_id: Arc::new(room_id.to_owned()),
             device_id,
             account_identity_keys: identity_keys,
-            session_id: Arc::new(session_id),
+            session_id: session_id.into(),
             creation_time: Arc::new(Instant::now()),
             message_count: Arc::new(AtomicU64::new(0)),
             shared: Arc::new(AtomicBool::new(false)),
@@ -240,12 +240,7 @@ impl OutboundGroupSession {
             "type": content.event_type(),
         });
 
-        let plaintext = cjson::to_string(&json_content).unwrap_or_else(|_| {
-            panic!(format!(
-                "Can't serialize {} to canonical JSON",
-                json_content
-            ))
-        });
+        let plaintext = json_content.to_string();
 
         let ciphertext = self.encrypt_helper(plaintext).await;
 
diff --git a/matrix_sdk_crypto/src/olm/session.rs b/matrix_sdk_crypto/src/olm/session.rs
index 554e75cb..a68f8230 100644
--- a/matrix_sdk_crypto/src/olm/session.rs
+++ b/matrix_sdk_crypto/src/olm/session.rs
@@ -46,8 +46,8 @@ pub struct Session {
     pub(crate) device_id: Arc<Box<DeviceId>>,
     pub(crate) our_identity_keys: Arc<IdentityKeys>,
     pub(crate) inner: Arc<Mutex<OlmSession>>,
-    pub(crate) session_id: Arc<String>,
-    pub(crate) sender_key: Arc<String>,
+    pub(crate) session_id: Arc<str>,
+    pub(crate) sender_key: Arc<str>,
     pub(crate) creation_time: Arc<Instant>,
     pub(crate) last_use_time: Arc<Instant>,
 }
@@ -126,7 +126,7 @@ impl Session {
             "content": content,
         });
 
-        let plaintext = cjson::to_string(&payload)
+        let plaintext = serde_json::to_string(&payload)
             .unwrap_or_else(|_| panic!(format!("Can't serialize {} to canonical JSON", payload)));
 
         let ciphertext = self.encrypt_helper(&plaintext).await.to_tuple();
@@ -232,8 +232,8 @@ impl Session {
             device_id,
             our_identity_keys,
             inner: Arc::new(Mutex::new(session)),
-            session_id: Arc::new(session_id),
-            sender_key: Arc::new(pickle.sender_key),
+            session_id: session_id.into(),
+            sender_key: pickle.sender_key.into(),
             creation_time: Arc::new(creation_time),
             last_use_time: Arc::new(last_use_time),
         })
diff --git a/matrix_sdk_crypto/src/olm/signing/mod.rs b/matrix_sdk_crypto/src/olm/signing/mod.rs
index 3cc9e3c0..926ceab9 100644
--- a/matrix_sdk_crypto/src/olm/signing/mod.rs
+++ b/matrix_sdk_crypto/src/olm/signing/mod.rs
@@ -149,7 +149,7 @@ impl PrivateCrossSigningIdentity {
             .sign_user(&user_identity)
             .await?;
 
-        Ok(SignatureUploadRequest { signed_keys })
+        Ok(SignatureUploadRequest::new(signed_keys))
     }
 
     /// Sign the given device keys with this identity.
@@ -192,7 +192,7 @@ impl PrivateCrossSigningIdentity {
                 serde_json::to_value(device_keys)?,
             );
 
-        Ok(SignatureUploadRequest { signed_keys })
+        Ok(SignatureUploadRequest::new(signed_keys))
     }
 
     /// Create a new identity for the given Olm Account.
@@ -215,11 +215,11 @@ impl PrivateCrossSigningIdentity {
             master.cross_signing_key(account.user_id().to_owned(), KeyUsage::Master);
         let signature = account
             .sign_json(
-                serde_json::to_value(&public_key)
+                &serde_json::to_value(&public_key)
                     .expect("Can't convert own public master key to json"),
             )
-            .await
-            .expect("Can't sign own public master key");
+            .await;
+
         public_key
             .signatures
             .entry(account.user_id().to_owned())
diff --git a/matrix_sdk_crypto/src/olm/signing/pk_signing.rs b/matrix_sdk_crypto/src/olm/signing/pk_signing.rs
index 838dca56..656448a4 100644
--- a/matrix_sdk_crypto/src/olm/signing/pk_signing.rs
+++ b/matrix_sdk_crypto/src/olm/signing/pk_signing.rs
@@ -23,7 +23,7 @@ use matrix_sdk_common::{
     identifiers::{DeviceKeyAlgorithm, DeviceKeyId},
 };
 use serde::{Deserialize, Serialize};
-use serde_json::{Error as JsonError, Value};
+use serde_json::{json, Error as JsonError, Value};
 use std::{collections::BTreeMap, sync::Arc};
 use thiserror::Error;
 use zeroize::Zeroizing;
@@ -171,14 +171,13 @@ impl MasterSigning {
 
     pub async fn sign_subkey<'a>(&self, subkey: &mut CrossSigningKey) {
         // TODO create a borrowed version of a cross singing key.
-        let subkey_wihtout_signatures = CrossSigningKey {
-            user_id: subkey.user_id.clone(),
-            keys: subkey.keys.clone(),
-            usage: subkey.usage.clone(),
-            signatures: BTreeMap::new(),
-        };
+        let subkey_wihtout_signatures = json!({
+            "user_id": subkey.user_id.clone(),
+            "keys": subkey.keys.clone(),
+            "usage": subkey.usage.clone(),
+        });
 
-        let message = cjson::to_string(&subkey_wihtout_signatures)
+        let message = serde_json::to_string(&subkey_wihtout_signatures)
             .expect("Can't serialize cross signing subkey");
         let signature = self.inner.sign(&message).await;
 
@@ -257,7 +256,15 @@ impl SelfSigning {
     }
 
     pub async fn sign_device(&self, device_keys: &mut DeviceKeys) -> Result<(), SignatureError> {
-        let json_device = serde_json::to_value(&device_keys)?;
+        // Create a copy of the device keys containing only fields that will
+        // get signed.
+        let json_device = json!({
+            "user_id": device_keys.user_id,
+            "device_id": device_keys.device_id,
+            "algorithms": device_keys.algorithms,
+            "keys": device_keys.keys,
+        });
+
         let signature = self.sign_device_helper(json_device).await?;
 
         device_keys
@@ -407,7 +414,7 @@ impl Signing {
     pub async fn sign_json(&self, mut json: Value) -> Result<Signature, SignatureError> {
         let json_object = json.as_object_mut().ok_or(SignatureError::NotAnObject)?;
         let _ = json_object.remove("signatures");
-        let canonical_json = cjson::to_string(json_object)?;
+        let canonical_json = serde_json::to_string(json_object)?;
         Ok(self.sign(&canonical_json).await)
     }
 
diff --git a/matrix_sdk_crypto/src/olm/utility.rs b/matrix_sdk_crypto/src/olm/utility.rs
index afa73a6b..5994a453 100644
--- a/matrix_sdk_crypto/src/olm/utility.rs
+++ b/matrix_sdk_crypto/src/olm/utility.rs
@@ -63,7 +63,7 @@ impl Utility {
         let unsigned = json_object.remove("unsigned");
         let signatures = json_object.remove("signatures");
 
-        let canonical_json = cjson::to_string(json_object)?;
+        let canonical_json = serde_json::to_string(json_object)?;
 
         if let Some(u) = unsigned {
             json_object.insert("unsigned".to_string(), u);
diff --git a/matrix_sdk_crypto/src/session_manager/sessions.rs b/matrix_sdk_crypto/src/session_manager/sessions.rs
index 8e18dfb7..2cf2a2cc 100644
--- a/matrix_sdk_crypto/src/session_manager/sessions.rs
+++ b/matrix_sdk_crypto/src/session_manager/sessions.rs
@@ -405,10 +405,7 @@ mod test {
             .or_insert_with(BTreeMap::new)
             .insert(bob.device_id().into(), one_time);
 
-        let response = KeyClaimResponse {
-            failures: BTreeMap::new(),
-            one_time_keys,
-        };
+        let response = KeyClaimResponse::new(one_time_keys);
 
         manager
             .receive_keys_claim_response(&response)
@@ -476,10 +473,7 @@ mod test {
             .or_insert_with(BTreeMap::new)
             .insert(bob.device_id().into(), one_time);
 
-        let response = KeyClaimResponse {
-            failures: BTreeMap::new(),
-            one_time_keys,
-        };
+        let response = KeyClaimResponse::new(one_time_keys);
 
         assert!(manager.outgoing_to_device_requests.is_empty());
 
diff --git a/matrix_sdk_crypto/src/store/sqlite.rs b/matrix_sdk_crypto/src/store/sqlite.rs
index 3df06ab2..ae01352e 100644
--- a/matrix_sdk_crypto/src/store/sqlite.rs
+++ b/matrix_sdk_crypto/src/store/sqlite.rs
@@ -15,7 +15,7 @@
 use std::{
     collections::{BTreeMap, HashMap, HashSet},
     convert::TryFrom,
-    path::{Path, PathBuf},
+    path::Path,
     result::Result as StdResult,
     sync::{Arc, Mutex as SyncMutex},
 };
@@ -58,7 +58,7 @@ pub struct SqliteStore {
     user_id: Arc<UserId>,
     device_id: Arc<Box<DeviceId>>,
     account_info: Arc<SyncMutex<Option<AccountInfo>>>,
-    path: Arc<PathBuf>,
+    path: Arc<Path>,
 
     sessions: SessionStore,
     tracked_users: Arc<DashSet<UserId>>,
@@ -155,7 +155,7 @@ impl SqliteStore {
             device_id: Arc::new(device_id.into()),
             account_info: Arc::new(SyncMutex::new(None)),
             sessions: SessionStore::new(),
-            path: Arc::new(path),
+            path: path.into(),
             connection: Arc::new(Mutex::new(connection)),
             tracked_users: Arc::new(DashSet::new()),
             users_for_key_query: Arc::new(DashSet::new()),
diff --git a/matrix_sdk_crypto/src/verification/sas/mod.rs b/matrix_sdk_crypto/src/verification/sas/mod.rs
index 9ef25bb8..476eadc2 100644
--- a/matrix_sdk_crypto/src/verification/sas/mod.rs
+++ b/matrix_sdk_crypto/src/verification/sas/mod.rs
@@ -66,7 +66,7 @@ pub struct Sas {
     private_identity: PrivateCrossSigningIdentity,
     other_device: ReadOnlyDevice,
     other_identity: Option<UserIdentities>,
-    flow_id: Arc<String>,
+    flow_id: Arc<str>,
 }
 
 impl Sas {
@@ -524,11 +524,11 @@ impl Sas {
         content
     }
 
-    pub(crate) fn verified_devices(&self) -> Option<Arc<Vec<ReadOnlyDevice>>> {
+    pub(crate) fn verified_devices(&self) -> Option<Arc<[ReadOnlyDevice]>> {
         self.inner.lock().unwrap().verified_devices()
     }
 
-    pub(crate) fn verified_identities(&self) -> Option<Arc<Vec<UserIdentities>>> {
+    pub(crate) fn verified_identities(&self) -> Option<Arc<[UserIdentities]>> {
         self.inner.lock().unwrap().verified_identities()
     }
 
@@ -723,7 +723,7 @@ impl InnerSas {
         }
     }
 
-    fn verification_flow_id(&self) -> Arc<String> {
+    fn verification_flow_id(&self) -> Arc<str> {
         match self {
             InnerSas::Created(s) => s.verification_flow_id.clone(),
             InnerSas::Started(s) => s.verification_flow_id.clone(),
@@ -752,7 +752,7 @@ impl InnerSas {
         }
     }
 
-    fn verified_devices(&self) -> Option<Arc<Vec<ReadOnlyDevice>>> {
+    fn verified_devices(&self) -> Option<Arc<[ReadOnlyDevice]>> {
         if let InnerSas::Done(s) = self {
             Some(s.verified_devices())
         } else {
@@ -760,7 +760,7 @@ impl InnerSas {
         }
     }
 
-    fn verified_identities(&self) -> Option<Arc<Vec<UserIdentities>>> {
+    fn verified_identities(&self) -> Option<Arc<[UserIdentities]>> {
         if let InnerSas::Done(s) = self {
             Some(s.verified_identities())
         } else {
diff --git a/matrix_sdk_crypto/src/verification/sas/sas_state.rs b/matrix_sdk_crypto/src/verification/sas/sas_state.rs
index 946e03a4..9c0ba30a 100644
--- a/matrix_sdk_crypto/src/verification/sas/sas_state.rs
+++ b/matrix_sdk_crypto/src/verification/sas/sas_state.rs
@@ -144,7 +144,7 @@ pub struct SasState<S: Clone> {
     ///
     /// This will be the transaction id for to-device events and the relates_to
     /// field for in-room events.
-    pub verification_flow_id: Arc<String>,
+    pub verification_flow_id: Arc<str>,
 
     /// The SAS state we're in.
     state: Arc<S>,
@@ -209,8 +209,8 @@ pub struct Confirmed {
 pub struct MacReceived {
     we_started: bool,
     their_pubkey: String,
-    verified_devices: Arc<Vec<ReadOnlyDevice>>,
-    verified_master_keys: Arc<Vec<UserIdentities>>,
+    verified_devices: Arc<[ReadOnlyDevice]>,
+    verified_master_keys: Arc<[UserIdentities]>,
 }
 
 /// The SAS state indicating that the verification finished successfully.
@@ -219,8 +219,8 @@ pub struct MacReceived {
 /// the master keys in the verified devices list.
 #[derive(Clone, Debug)]
 pub struct Done {
-    verified_devices: Arc<Vec<ReadOnlyDevice>>,
-    verified_master_keys: Arc<Vec<UserIdentities>>,
+    verified_devices: Arc<[ReadOnlyDevice]>,
+    verified_master_keys: Arc<[UserIdentities]>,
 }
 
 #[derive(Clone, Debug)]
@@ -269,7 +269,7 @@ impl<S: Clone> SasState<S> {
     }
 
     fn check_event(&self, sender: &UserId, flow_id: &str) -> Result<(), CancelCode> {
-        if flow_id != *self.verification_flow_id {
+        if *flow_id != *self.verification_flow_id {
             Err(CancelCode::UnknownTransaction)
         } else if sender != self.ids.other_device.user_id() {
             Err(CancelCode::UserMismatch)
@@ -303,7 +303,7 @@ impl SasState<Created> {
                 other_device,
                 other_identity,
             },
-            verification_flow_id: Arc::new(verification_flow_id),
+            verification_flow_id: verification_flow_id.into(),
 
             creation_time: Arc::new(Instant::now()),
             last_event_time: Arc::new(Instant::now()),
@@ -351,7 +351,7 @@ impl SasState<Created> {
             let accepted_protocols =
                 AcceptedProtocols::try_from(content.clone()).map_err(|c| self.clone().cancel(c))?;
 
-            let json_start_content = cjson::to_string(&self.as_content())
+            let json_start_content = serde_json::to_string(&self.as_content())
                 .expect("Can't deserialize start event content");
 
             Ok(SasState {
@@ -396,7 +396,8 @@ impl SasState<Started> {
             let sas = OlmSas::new();
             let utility = OlmUtility::new();
 
-            let json_content = cjson::to_string(&event.content).expect("Can't serialize content");
+            let json_content =
+                serde_json::to_string(&event.content).expect("Can't serialize content");
             let pubkey = sas.public_key();
             let commitment = utility.sha256_utf8_msg(&format!("{}{}", pubkey, json_content));
 
@@ -412,7 +413,7 @@ impl SasState<Started> {
                 creation_time: Arc::new(Instant::now()),
                 last_event_time: Arc::new(Instant::now()),
 
-                verification_flow_id: Arc::new(event.content.transaction_id.clone()),
+                verification_flow_id: event.content.transaction_id.as_str().into(),
 
                 state: Arc::new(Started {
                     protocol_definitions: content.clone(),
@@ -451,7 +452,7 @@ impl SasState<Started> {
                     other_identity,
                 },
 
-                verification_flow_id: Arc::new(event.content.transaction_id.clone()),
+                verification_flow_id: event.content.transaction_id.as_str().into(),
                 state: Arc::new(Canceled::new(CancelCode::UnknownMethod)),
             })
         }
@@ -656,8 +657,8 @@ impl SasState<KeyReceived> {
             state: Arc::new(MacReceived {
                 we_started: self.state.we_started,
                 their_pubkey: self.state.their_pubkey.clone(),
-                verified_devices: Arc::new(devices),
-                verified_master_keys: Arc::new(master_keys),
+                verified_devices: devices.into(),
+                verified_master_keys: master_keys.into(),
             }),
         })
     }
@@ -711,8 +712,8 @@ impl SasState<Confirmed> {
             ids: self.ids,
 
             state: Arc::new(Done {
-                verified_devices: Arc::new(devices),
-                verified_master_keys: Arc::new(master_keys),
+                verified_devices: devices.into(),
+                verified_master_keys: master_keys.into(),
             }),
         })
     }
@@ -791,12 +792,12 @@ impl SasState<Done> {
     }
 
     /// Get the list of verified devices.
-    pub fn verified_devices(&self) -> Arc<Vec<ReadOnlyDevice>> {
+    pub fn verified_devices(&self) -> Arc<[ReadOnlyDevice]> {
         self.state.verified_devices.clone()
     }
 
     /// Get the list of verified identities.
-    pub fn verified_identities(&self) -> Arc<Vec<UserIdentities>> {
+    pub fn verified_identities(&self) -> Arc<[UserIdentities]> {
         self.state.verified_master_keys.clone()
     }
 }
diff --git a/matrix_sdk_test/Cargo.toml b/matrix_sdk_test/Cargo.toml
index b6a7bcb9..28f88398 100644
--- a/matrix_sdk_test/Cargo.toml
+++ b/matrix_sdk_test/Cargo.toml
@@ -16,4 +16,4 @@ http = "0.2.1"
 matrix-sdk-common = { version = "0.1.0", path = "../matrix_sdk_common" }
 matrix-sdk-test-macros = { version = "0.1.0", path = "../matrix_sdk_test_macros" }
 lazy_static = "1.4.0"
-serde = "1.0.116"
+serde = "1.0.117"