diff --git a/matrix_sdk_crypto/Cargo.toml b/matrix_sdk_crypto/Cargo.toml
index 108aebc4..764b1f2c 100644
--- a/matrix_sdk_crypto/Cargo.toml
+++ b/matrix_sdk_crypto/Cargo.toml
@@ -21,6 +21,7 @@ docs = ["sled_cryptostore"]
 
 [dependencies]
 matrix-sdk-common = { version = "0.2.0", path = "../matrix_sdk_common" }
+ruma = { version = "0.1.2", features = ["client-api-c", "unstable-pre-spec"] }
 
 olm-rs = { version = "1.0.0", features = ["serde"] }
 getrandom = "0.2.2"
diff --git a/matrix_sdk_crypto/benches/crypto_bench.rs b/matrix_sdk_crypto/benches/crypto_bench.rs
index 95e74aaf..280d01af 100644
--- a/matrix_sdk_crypto/benches/crypto_bench.rs
+++ b/matrix_sdk_crypto/benches/crypto_bench.rs
@@ -4,17 +4,19 @@ mod perf;
 use std::sync::Arc;
 
 use criterion::*;
-use matrix_sdk_common::{
-    api::r0::{
-        keys::{claim_keys, get_keys},
-        to_device::send_event_to_device::Response as ToDeviceResponse,
-    },
-    identifiers::{room_id, user_id, DeviceIdBox, UserId},
-    uuid::Uuid,
-    IncomingResponse,
-};
+use matrix_sdk_common::uuid::Uuid;
 use matrix_sdk_crypto::{EncryptionSettings, OlmMachine};
 use matrix_sdk_test::response_from_file;
+use ruma::{
+    api::{
+        client::r0::{
+            keys::{claim_keys, get_keys},
+            to_device::send_event_to_device::Response as ToDeviceResponse,
+        },
+        IncomingResponse,
+    },
+    room_id, user_id, DeviceIdBox, UserId,
+};
 use serde_json::Value;
 use tokio::runtime::Builder;
 
diff --git a/matrix_sdk_crypto/src/error.rs b/matrix_sdk_crypto/src/error.rs
index c93f0392..d7040f5c 100644
--- a/matrix_sdk_crypto/src/error.rs
+++ b/matrix_sdk_crypto/src/error.rs
@@ -12,8 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use matrix_sdk_common::identifiers::{DeviceId, Error as IdentifierError, UserId};
 use olm_rs::errors::{OlmGroupSessionError, OlmSessionError};
+use ruma::{identifiers::Error as IdentifierError, DeviceId, UserId};
 use serde_json::Error as SerdeError;
 use thiserror::Error;
 
diff --git a/matrix_sdk_crypto/src/file_encryption/attachments.rs b/matrix_sdk_crypto/src/file_encryption/attachments.rs
index d20392c8..14d7b75c 100644
--- a/matrix_sdk_crypto/src/file_encryption/attachments.rs
+++ b/matrix_sdk_crypto/src/file_encryption/attachments.rs
@@ -23,7 +23,7 @@ use aes_ctr::{
 };
 use base64::DecodeError;
 use getrandom::getrandom;
-use matrix_sdk_common::events::room::{EncryptedFile, JsonWebKey, JsonWebKeyInit};
+use ruma::events::room::{EncryptedFile, JsonWebKey, JsonWebKeyInit};
 use serde::{Deserialize, Serialize};
 use sha2::{Digest, Sha256};
 use thiserror::Error;
diff --git a/matrix_sdk_crypto/src/file_encryption/key_export.rs b/matrix_sdk_crypto/src/file_encryption/key_export.rs
index a761d11d..95cc8bb6 100644
--- a/matrix_sdk_crypto/src/file_encryption/key_export.rs
+++ b/matrix_sdk_crypto/src/file_encryption/key_export.rs
@@ -76,7 +76,7 @@ pub enum KeyExportError {
 /// ```no_run
 /// # use std::io::Cursor;
 /// # use matrix_sdk_crypto::{OlmMachine, decrypt_key_export};
-/// # use matrix_sdk_common::identifiers::user_id;
+/// # use ruma::user_id;
 /// # use futures::executor::block_on;
 /// # let alice = user_id!("@alice:example.org");
 /// # let machine = OlmMachine::new(&alice, "DEVICEID".into());
@@ -127,7 +127,7 @@ pub fn decrypt_key_export(
 /// # Examples
 /// ```no_run
 /// # use matrix_sdk_crypto::{OlmMachine, encrypt_key_export};
-/// # use matrix_sdk_common::identifiers::{user_id, room_id};
+/// # use ruma::{user_id, room_id};
 /// # use futures::executor::block_on;
 /// # let alice = user_id!("@alice:example.org");
 /// # let machine = OlmMachine::new(&alice, "DEVICEID".into());
@@ -229,9 +229,9 @@ mod test {
     use std::io::Cursor;
 
     use indoc::indoc;
-    use matrix_sdk_common::identifiers::room_id;
     use matrix_sdk_test::async_test;
     use proptest::prelude::*;
+    use ruma::room_id;
 
     use super::{decode, decrypt_helper, decrypt_key_export, encrypt_helper, encrypt_key_export};
     use crate::machine::test::get_prepared_machine;
diff --git a/matrix_sdk_crypto/src/identities/device.rs b/matrix_sdk_crypto/src/identities/device.rs
index d6f63541..0fef3a7a 100644
--- a/matrix_sdk_crypto/src/identities/device.rs
+++ b/matrix_sdk_crypto/src/identities/device.rs
@@ -23,8 +23,9 @@ use std::{
 };
 
 use atomic::Atomic;
-use matrix_sdk_common::{
-    api::r0::keys::SignedKey,
+use matrix_sdk_common::locks::Mutex;
+use ruma::{
+    api::client::r0::keys::SignedKey,
     encryption::DeviceKeys,
     events::{
         forwarded_room_key::ForwardedRoomKeyToDeviceEventContent,
@@ -33,7 +34,6 @@ use matrix_sdk_common::{
     identifiers::{
         DeviceId, DeviceIdBox, DeviceKeyAlgorithm, DeviceKeyId, EventEncryptionAlgorithm, UserId,
     },
-    locks::Mutex,
 };
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use serde_json::{json, Value};
@@ -570,10 +570,7 @@ impl PartialEq for ReadOnlyDevice {
 pub(crate) mod test {
     use std::convert::TryFrom;
 
-    use matrix_sdk_common::{
-        encryption::DeviceKeys,
-        identifiers::{user_id, DeviceKeyAlgorithm},
-    };
+    use ruma::{encryption::DeviceKeys, user_id, DeviceKeyAlgorithm};
     use serde_json::json;
 
     use crate::identities::{LocalTrust, ReadOnlyDevice};
diff --git a/matrix_sdk_crypto/src/identities/manager.rs b/matrix_sdk_crypto/src/identities/manager.rs
index 8705e0dc..0af468b7 100644
--- a/matrix_sdk_crypto/src/identities/manager.rs
+++ b/matrix_sdk_crypto/src/identities/manager.rs
@@ -19,10 +19,10 @@ use std::{
 };
 
 use futures::future::join_all;
-use matrix_sdk_common::{
-    api::r0::keys::get_keys::Response as KeysQueryResponse,
+use matrix_sdk_common::executor::spawn;
+use ruma::{
+    api::client::r0::keys::get_keys::Response as KeysQueryResponse,
     encryption::DeviceKeys,
-    executor::spawn,
     identifiers::{DeviceId, DeviceIdBox, UserId},
 };
 use tracing::{trace, warn};
@@ -390,13 +390,12 @@ impl IdentityManager {
 pub(crate) mod test {
     use std::sync::Arc;
 
-    use matrix_sdk_common::{
-        api::r0::keys::get_keys::Response as KeyQueryResponse,
-        identifiers::{user_id, DeviceIdBox, UserId},
-        locks::Mutex,
-        IncomingResponse,
-    };
+    use matrix_sdk_common::locks::Mutex;
     use matrix_sdk_test::async_test;
+    use ruma::{
+        api::{client::r0::keys::get_keys::Response as KeyQueryResponse, IncomingResponse},
+        user_id, DeviceIdBox, UserId,
+    };
     use serde_json::json;
 
     use crate::{
diff --git a/matrix_sdk_crypto/src/identities/user.rs b/matrix_sdk_crypto/src/identities/user.rs
index 66405c91..4142ea0f 100644
--- a/matrix_sdk_crypto/src/identities/user.rs
+++ b/matrix_sdk_crypto/src/identities/user.rs
@@ -21,9 +21,9 @@ use std::{
     },
 };
 
-use matrix_sdk_common::{
-    api::r0::keys::{CrossSigningKey, KeyUsage},
-    identifiers::{DeviceKeyId, UserId},
+use ruma::{
+    api::client::r0::keys::{CrossSigningKey, KeyUsage},
+    DeviceKeyId, UserId,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::to_value;
@@ -680,10 +680,9 @@ impl OwnUserIdentity {
 pub(crate) mod test {
     use std::{convert::TryFrom, sync::Arc};
 
-    use matrix_sdk_common::{
-        api::r0::keys::get_keys::Response as KeyQueryResponse, identifiers::user_id, locks::Mutex,
-    };
+    use matrix_sdk_common::locks::Mutex;
     use matrix_sdk_test::async_test;
+    use ruma::{api::client::r0::keys::get_keys::Response as KeyQueryResponse, user_id};
 
     use super::{OwnUserIdentity, UserIdentities, UserIdentity};
     use crate::{
diff --git a/matrix_sdk_crypto/src/key_request.rs b/matrix_sdk_crypto/src/key_request.rs
index 19876ce1..9732d8d4 100644
--- a/matrix_sdk_crypto/src/key_request.rs
+++ b/matrix_sdk_crypto/src/key_request.rs
@@ -23,15 +23,15 @@
 use std::{collections::BTreeMap, sync::Arc};
 
 use dashmap::{mapref::entry::Entry, DashMap, DashSet};
-use matrix_sdk_common::{
-    api::r0::to_device::DeviceIdOrAllDevices,
+use matrix_sdk_common::uuid::Uuid;
+use ruma::{
+    api::client::r0::to_device::DeviceIdOrAllDevices,
     events::{
         forwarded_room_key::ForwardedRoomKeyToDeviceEventContent,
         room_key_request::{Action, RequestedKeyInfo, RoomKeyRequestToDeviceEventContent},
         AnyToDeviceEvent, EventType, ToDeviceEvent,
     },
     identifiers::{DeviceId, DeviceIdBox, EventEncryptionAlgorithm, RoomId, UserId},
-    uuid::Uuid,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::value::to_raw_value;
@@ -786,17 +786,17 @@ mod test {
     use std::{convert::TryInto, sync::Arc};
 
     use dashmap::DashMap;
-    use matrix_sdk_common::{
-        api::r0::to_device::DeviceIdOrAllDevices,
+    use matrix_sdk_common::locks::Mutex;
+    use matrix_sdk_test::async_test;
+    use ruma::{
+        api::client::r0::to_device::DeviceIdOrAllDevices,
         events::{
             forwarded_room_key::ForwardedRoomKeyToDeviceEventContent,
             room::encrypted::EncryptedEventContent,
             room_key_request::RoomKeyRequestToDeviceEventContent, AnyToDeviceEvent, ToDeviceEvent,
         },
-        identifiers::{room_id, user_id, DeviceIdBox, RoomId, UserId},
-        locks::Mutex,
+        room_id, user_id, DeviceIdBox, RoomId, UserId,
     };
-    use matrix_sdk_test::async_test;
 
     use super::{KeyRequestMachine, KeyshareDecision};
     use crate::{
diff --git a/matrix_sdk_crypto/src/machine.rs b/matrix_sdk_crypto/src/machine.rs
index 9f00046b..807d13cf 100644
--- a/matrix_sdk_crypto/src/machine.rs
+++ b/matrix_sdk_crypto/src/machine.rs
@@ -18,7 +18,12 @@ use std::{collections::BTreeMap, mem, sync::Arc};
 
 use dashmap::DashMap;
 use matrix_sdk_common::{
-    api::r0::{
+    deserialized_responses::{AlgorithmInfo, EncryptionInfo, SyncRoomEvent, VerificationState},
+    locks::Mutex,
+    uuid::Uuid,
+};
+use ruma::{
+    api::client::r0::{
         keys::{
             claim_keys::{Request as KeysClaimRequest, Response as KeysClaimResponse},
             get_keys::Response as KeysQueryResponse,
@@ -28,18 +33,12 @@ use matrix_sdk_common::{
         sync::sync_events::{DeviceLists, ToDevice},
     },
     assign,
-    deserialized_responses::{AlgorithmInfo, EncryptionInfo, SyncRoomEvent, VerificationState},
     events::{
         room::encrypted::{EncryptedEventContent, EncryptedEventScheme},
         room_key::RoomKeyToDeviceEventContent,
         AnyMessageEventContent, AnyRoomEvent, AnyToDeviceEvent, SyncMessageEvent, ToDeviceEvent,
     },
-    identifiers::{
-        DeviceId, DeviceIdBox, DeviceKeyAlgorithm, EventEncryptionAlgorithm, RoomId, UserId,
-    },
-    locks::Mutex,
-    uuid::Uuid,
-    UInt,
+    DeviceId, DeviceIdBox, DeviceKeyAlgorithm, EventEncryptionAlgorithm, RoomId, UInt, UserId,
 };
 use tracing::{debug, error, info, trace, warn};
 
@@ -412,7 +411,7 @@ impl OlmMachine {
     /// ```
     /// # use std::convert::TryFrom;
     /// # use matrix_sdk_crypto::OlmMachine;
-    /// # use matrix_sdk_common::identifiers::UserId;
+    /// # use ruma::UserId;
     /// # use futures::executor::block_on;
     /// # let alice = UserId::try_from("@alice:example.org").unwrap();
     /// # let machine = OlmMachine::new(&alice, "DEVICEID".into());
@@ -1031,7 +1030,7 @@ impl OlmMachine {
     /// ```
     /// # use std::convert::TryFrom;
     /// # use matrix_sdk_crypto::OlmMachine;
-    /// # use matrix_sdk_common::identifiers::UserId;
+    /// # use ruma::UserId;
     /// # use futures::executor::block_on;
     /// # let alice = UserId::try_from("@alice:example.org").unwrap();
     /// # let machine = OlmMachine::new(&alice, "DEVICEID".into());
@@ -1060,7 +1059,7 @@ impl OlmMachine {
     /// ```
     /// # use std::convert::TryFrom;
     /// # use matrix_sdk_crypto::OlmMachine;
-    /// # use matrix_sdk_common::identifiers::UserId;
+    /// # use ruma::UserId;
     /// # use futures::executor::block_on;
     /// # let alice = UserId::try_from("@alice:example.org").unwrap();
     /// # let machine = OlmMachine::new(&alice, "DEVICEID".into());
@@ -1092,7 +1091,7 @@ impl OlmMachine {
     /// ```no_run
     /// # use std::io::Cursor;
     /// # use matrix_sdk_crypto::{OlmMachine, decrypt_key_export};
-    /// # use matrix_sdk_common::identifiers::user_id;
+    /// # use ruma::user_id;
     /// # use futures::executor::block_on;
     /// # let alice = user_id!("@alice:example.org");
     /// # let machine = OlmMachine::new(&alice, "DEVICEID".into());
@@ -1179,7 +1178,7 @@ impl OlmMachine {
     ///
     /// ```no_run
     /// # use matrix_sdk_crypto::{OlmMachine, encrypt_key_export};
-    /// # use matrix_sdk_common::identifiers::{user_id, room_id};
+    /// # use ruma::{user_id, room_id};
     /// # use futures::executor::block_on;
     /// # let alice = user_id!("@alice:example.org");
     /// # let machine = OlmMachine::new(&alice, "DEVICEID".into());
@@ -1223,8 +1222,12 @@ pub(crate) mod test {
     };
 
     use http::Response;
-    use matrix_sdk_common::{
-        api::r0::keys::{claim_keys, get_keys, upload_keys, OneTimeKey},
+    use matrix_sdk_test::test_json;
+    use ruma::{
+        api::{
+            client::r0::keys::{claim_keys, get_keys, upload_keys, OneTimeKey},
+            IncomingResponse,
+        },
         events::{
             room::{
                 encrypted::EncryptedEventContent,
@@ -1236,9 +1239,9 @@ pub(crate) mod test {
         identifiers::{
             event_id, room_id, user_id, DeviceId, DeviceKeyAlgorithm, DeviceKeyId, UserId,
         },
-        IncomingResponse, MilliSecondsSinceUnixEpoch, Raw,
+        serde::Raw,
+        uint, MilliSecondsSinceUnixEpoch,
     };
-    use matrix_sdk_test::test_json;
     use serde_json::json;
 
     use crate::{
@@ -1251,8 +1254,6 @@ pub(crate) mod test {
     /// These keys need to be periodically uploaded to the server.
     type OneTimeKeys = BTreeMap<DeviceKeyId, OneTimeKey>;
 
-    use matrix_sdk_common::uint;
-
     fn alice_id() -> UserId {
         user_id!("@alice:example.org")
     }
diff --git a/matrix_sdk_crypto/src/olm/account.rs b/matrix_sdk_crypto/src/olm/account.rs
index ddd527b9..2ed7750b 100644
--- a/matrix_sdk_crypto/src/olm/account.rs
+++ b/matrix_sdk_crypto/src/olm/account.rs
@@ -23,10 +23,17 @@ use std::{
     },
 };
 
+use matrix_sdk_common::{instant::Instant, locks::Mutex};
+use olm_rs::{
+    account::{IdentityKeys, OlmAccount, OneTimeKeys},
+    errors::{OlmAccountError, OlmSessionError},
+    session::{OlmMessage, PreKeyMessage},
+    PicklingMode,
+};
 #[cfg(test)]
-use matrix_sdk_common::events::EventType;
-use matrix_sdk_common::{
-    api::r0::keys::{
+use ruma::events::EventType;
+use ruma::{
+    api::client::r0::keys::{
         upload_keys, upload_signatures::Request as SignatureUploadRequest, OneTimeKey, SignedKey,
     },
     encryption::DeviceKeys,
@@ -38,15 +45,8 @@ use matrix_sdk_common::{
         DeviceId, DeviceIdBox, DeviceKeyAlgorithm, DeviceKeyId, EventEncryptionAlgorithm, RoomId,
         UserId,
     },
-    instant::Instant,
-    locks::Mutex,
-    CanonicalJsonValue, Raw, UInt,
-};
-use olm_rs::{
-    account::{IdentityKeys, OlmAccount, OneTimeKeys},
-    errors::{OlmAccountError, OlmSessionError},
-    session::{OlmMessage, PreKeyMessage},
-    PicklingMode,
+    serde::{CanonicalJsonValue, Raw},
+    UInt,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
diff --git a/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs b/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs
index 4dfc0c5e..e557d585 100644
--- a/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs
+++ b/matrix_sdk_crypto/src/olm/group_sessions/inbound.rs
@@ -14,7 +14,16 @@
 
 use std::{collections::BTreeMap, convert::TryFrom, fmt, mem, sync::Arc};
 
-use matrix_sdk_common::{
+use matrix_sdk_common::locks::Mutex;
+pub use olm_rs::{
+    account::IdentityKeys,
+    session::{OlmMessage, PreKeyMessage},
+    utility::OlmUtility,
+};
+use olm_rs::{
+    errors::OlmGroupSessionError, inbound_group_session::OlmInboundGroupSession, PicklingMode,
+};
+use ruma::{
     events::{
         forwarded_room_key::ForwardedRoomKeyToDeviceEventContent,
         room::{
@@ -24,16 +33,7 @@ use matrix_sdk_common::{
         AnySyncRoomEvent, SyncMessageEvent,
     },
     identifiers::{DeviceKeyAlgorithm, EventEncryptionAlgorithm, RoomId},
-    locks::Mutex,
-    Raw,
-};
-pub use olm_rs::{
-    account::IdentityKeys,
-    session::{OlmMessage, PreKeyMessage},
-    utility::OlmUtility,
-};
-use olm_rs::{
-    errors::OlmGroupSessionError, inbound_group_session::OlmInboundGroupSession, PicklingMode,
+    serde::Raw,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
diff --git a/matrix_sdk_crypto/src/olm/group_sessions/mod.rs b/matrix_sdk_crypto/src/olm/group_sessions/mod.rs
index 89cac84a..f1ea29d2 100644
--- a/matrix_sdk_crypto/src/olm/group_sessions/mod.rs
+++ b/matrix_sdk_crypto/src/olm/group_sessions/mod.rs
@@ -14,11 +14,11 @@
 
 use std::{collections::BTreeMap, convert::TryInto};
 
-use matrix_sdk_common::{
+use ruma::{
     events::forwarded_room_key::{
         ForwardedRoomKeyToDeviceEventContent, ForwardedRoomKeyToDeviceEventContentInit,
     },
-    identifiers::{DeviceKeyAlgorithm, EventEncryptionAlgorithm, RoomId},
+    DeviceKeyAlgorithm, EventEncryptionAlgorithm, RoomId,
 };
 use serde::{Deserialize, Serialize};
 use zeroize::Zeroize;
@@ -130,9 +130,9 @@ mod test {
         time::{Duration, Instant},
     };
 
-    use matrix_sdk_common::{
+    use ruma::{
         events::{room::message::MessageEventContent, AnyMessageEventContent},
-        identifiers::{room_id, user_id},
+        room_id, user_id,
     };
 
     use super::EncryptionSettings;
diff --git a/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs b/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs
index efca136a..513e81da 100644
--- a/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs
+++ b/matrix_sdk_crypto/src/olm/group_sessions/outbound.rs
@@ -24,8 +24,17 @@ use std::{
 };
 
 use dashmap::DashMap;
-use matrix_sdk_common::{
-    api::r0::to_device::DeviceIdOrAllDevices,
+use matrix_sdk_common::{instant::Instant, locks::Mutex, uuid::Uuid};
+pub use olm_rs::{
+    account::IdentityKeys,
+    session::{OlmMessage, PreKeyMessage},
+    utility::OlmUtility,
+};
+use olm_rs::{
+    errors::OlmGroupSessionError, outbound_group_session::OlmOutboundGroupSession, PicklingMode,
+};
+use ruma::{
+    api::client::r0::to_device::DeviceIdOrAllDevices,
     events::{
         room::{
             encrypted::{EncryptedEventContent, EncryptedEventScheme, MegolmV1AesSha2ContentInit},
@@ -35,18 +44,7 @@ use matrix_sdk_common::{
         },
         AnyMessageEventContent, EventContent,
     },
-    identifiers::{DeviceId, DeviceIdBox, EventEncryptionAlgorithm, RoomId, UserId},
-    instant::Instant,
-    locks::Mutex,
-    uuid::Uuid,
-};
-pub use olm_rs::{
-    account::IdentityKeys,
-    session::{OlmMessage, PreKeyMessage},
-    utility::OlmUtility,
-};
-use olm_rs::{
-    errors::OlmGroupSessionError, outbound_group_session::OlmOutboundGroupSession, PicklingMode,
+    DeviceId, DeviceIdBox, EventEncryptionAlgorithm, RoomId, UserId,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
@@ -572,10 +570,9 @@ pub struct PickledOutboundGroupSession {
 mod test {
     use std::time::Duration;
 
-    use matrix_sdk_common::{
+    use ruma::{
         events::room::{encryption::EncryptionEventContent, history_visibility::HistoryVisibility},
-        identifiers::EventEncryptionAlgorithm,
-        uint,
+        uint, EventEncryptionAlgorithm,
     };
 
     use super::{EncryptionSettings, ROTATION_MESSAGES, ROTATION_PERIOD};
diff --git a/matrix_sdk_crypto/src/olm/mod.rs b/matrix_sdk_crypto/src/olm/mod.rs
index 51f81fd3..e6fb4743 100644
--- a/matrix_sdk_crypto/src/olm/mod.rs
+++ b/matrix_sdk_crypto/src/olm/mod.rs
@@ -61,12 +61,12 @@ where
 pub(crate) mod test {
     use std::{collections::BTreeMap, convert::TryInto};
 
-    use matrix_sdk_common::{
-        api::r0::keys::SignedKey,
-        events::forwarded_room_key::ForwardedRoomKeyToDeviceEventContent,
-        identifiers::{room_id, user_id, DeviceId, UserId},
-    };
     use olm_rs::session::OlmMessage;
+    use ruma::{
+        api::client::r0::keys::SignedKey,
+        events::forwarded_room_key::ForwardedRoomKeyToDeviceEventContent, room_id, user_id,
+        DeviceId, UserId,
+    };
 
     use crate::olm::{InboundGroupSession, ReadOnlyAccount, Session};
 
diff --git a/matrix_sdk_crypto/src/olm/session.rs b/matrix_sdk_crypto/src/olm/session.rs
index 586e7d02..be34a376 100644
--- a/matrix_sdk_crypto/src/olm/session.rs
+++ b/matrix_sdk_crypto/src/olm/session.rs
@@ -14,7 +14,13 @@
 
 use std::{collections::BTreeMap, fmt, sync::Arc};
 
-use matrix_sdk_common::{
+use matrix_sdk_common::{instant::Instant, locks::Mutex};
+use olm_rs::{errors::OlmSessionError, session::OlmSession, PicklingMode};
+pub use olm_rs::{
+    session::{OlmMessage, PreKeyMessage},
+    utility::OlmUtility,
+};
+use ruma::{
     events::{
         room::encrypted::{
             CiphertextInfo, EncryptedEventContent, EncryptedEventScheme,
@@ -23,13 +29,6 @@ use matrix_sdk_common::{
         EventType,
     },
     identifiers::{DeviceId, DeviceKeyAlgorithm, UserId},
-    instant::Instant,
-    locks::Mutex,
-};
-use olm_rs::{errors::OlmSessionError, session::OlmSession, PicklingMode};
-pub use olm_rs::{
-    session::{OlmMessage, PreKeyMessage},
-    utility::OlmUtility,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Value};
diff --git a/matrix_sdk_crypto/src/olm/signing/mod.rs b/matrix_sdk_crypto/src/olm/signing/mod.rs
index bbeacff6..8b1de7f2 100644
--- a/matrix_sdk_crypto/src/olm/signing/mod.rs
+++ b/matrix_sdk_crypto/src/olm/signing/mod.rs
@@ -22,13 +22,13 @@ use std::{
     },
 };
 
-use matrix_sdk_common::{
-    api::r0::keys::{upload_signatures::Request as SignatureUploadRequest, KeyUsage},
-    encryption::DeviceKeys,
-    identifiers::{DeviceKeyAlgorithm, DeviceKeyId, UserId},
-    locks::Mutex,
-};
+use matrix_sdk_common::locks::Mutex;
 use pk_signing::{MasterSigning, PickledSignings, SelfSigning, Signing, SigningError, UserSigning};
+use ruma::{
+    api::client::r0::keys::{upload_signatures::Request as SignatureUploadRequest, KeyUsage},
+    encryption::DeviceKeys,
+    DeviceKeyAlgorithm, DeviceKeyId, UserId,
+};
 use serde::{Deserialize, Serialize};
 use serde_json::Error as JsonError;
 
@@ -387,11 +387,8 @@ impl PrivateCrossSigningIdentity {
 mod test {
     use std::{collections::BTreeMap, sync::Arc};
 
-    use matrix_sdk_common::{
-        api::r0::keys::CrossSigningKey,
-        identifiers::{user_id, UserId},
-    };
     use matrix_sdk_test::async_test;
+    use ruma::{api::client::r0::keys::CrossSigningKey, user_id, UserId};
 
     use super::{PrivateCrossSigningIdentity, Signing};
     use crate::{
diff --git a/matrix_sdk_crypto/src/olm/signing/pk_signing.rs b/matrix_sdk_crypto/src/olm/signing/pk_signing.rs
index 419fccd9..0da882d3 100644
--- a/matrix_sdk_crypto/src/olm/signing/pk_signing.rs
+++ b/matrix_sdk_crypto/src/olm/signing/pk_signing.rs
@@ -19,16 +19,16 @@ use aes_gcm::{
     Aes256Gcm,
 };
 use getrandom::getrandom;
-use matrix_sdk_common::{
-    api::r0::keys::{CrossSigningKey, KeyUsage},
-    encryption::DeviceKeys,
-    identifiers::{DeviceKeyAlgorithm, DeviceKeyId, UserId},
-    locks::Mutex,
-    CanonicalJsonValue,
-};
+use matrix_sdk_common::locks::Mutex;
 use olm_rs::pk::OlmPkSigning;
 #[cfg(test)]
 use olm_rs::{errors::OlmUtilityError, utility::OlmUtility};
+use ruma::{
+    api::client::r0::keys::{CrossSigningKey, KeyUsage},
+    encryption::DeviceKeys,
+    serde::CanonicalJsonValue,
+    DeviceKeyAlgorithm, DeviceKeyId, UserId,
+};
 use serde::{Deserialize, Serialize};
 use serde_json::{json, Error as JsonError, Value};
 use thiserror::Error;
diff --git a/matrix_sdk_crypto/src/olm/utility.rs b/matrix_sdk_crypto/src/olm/utility.rs
index 95bd4d99..49922d18 100644
--- a/matrix_sdk_crypto/src/olm/utility.rs
+++ b/matrix_sdk_crypto/src/olm/utility.rs
@@ -14,11 +14,8 @@
 
 use std::convert::TryInto;
 
-use matrix_sdk_common::{
-    identifiers::{DeviceKeyAlgorithm, DeviceKeyId, UserId},
-    CanonicalJsonValue,
-};
 use olm_rs::utility::OlmUtility;
+use ruma::{serde::CanonicalJsonValue, DeviceKeyAlgorithm, DeviceKeyId, UserId};
 use serde_json::Value;
 
 use crate::error::SignatureError;
@@ -97,7 +94,7 @@ impl Utility {
 
 #[cfg(test)]
 mod test {
-    use matrix_sdk_common::identifiers::{user_id, DeviceKeyAlgorithm, DeviceKeyId};
+    use ruma::{user_id, DeviceKeyAlgorithm, DeviceKeyId};
     use serde_json::json;
 
     use super::Utility;
diff --git a/matrix_sdk_crypto/src/requests.rs b/matrix_sdk_crypto/src/requests.rs
index 17e853c6..fc3faa9b 100644
--- a/matrix_sdk_crypto/src/requests.rs
+++ b/matrix_sdk_crypto/src/requests.rs
@@ -16,8 +16,9 @@
 
 use std::{collections::BTreeMap, sync::Arc, time::Duration};
 
-use matrix_sdk_common::{
-    api::r0::{
+use matrix_sdk_common::uuid::Uuid;
+use ruma::{
+    api::client::r0::{
         keys::{
             claim_keys::Response as KeysClaimResponse,
             get_keys::Response as KeysQueryResponse,
@@ -32,15 +33,14 @@ use matrix_sdk_common::{
         to_device::{send_event_to_device::Response as ToDeviceResponse, DeviceIdOrAllDevices},
     },
     events::{AnyMessageEventContent, EventType},
-    identifiers::{DeviceIdBox, RoomId, UserId},
-    uuid::Uuid,
+    DeviceIdBox, RoomId, UserId,
 };
 use serde::{Deserialize, Serialize};
 use serde_json::value::RawValue as RawJsonValue;
 
 /// Customized version of
-/// `ruma_client_api::r0::to_device::send_event_to_device::Request`, using a
-/// UUID for the transaction ID.
+/// `ruma_client_api::r0::to_device::send_event_to_device::Request`,
+/// using a UUID for the transaction ID.
 #[derive(Clone, Debug, Deserialize, Serialize)]
 pub struct ToDeviceRequest {
     /// Type of event being sent to each device.
@@ -91,8 +91,9 @@ pub struct UploadSigningKeysRequest {
     pub user_signing_key: Option<CrossSigningKey>,
 }
 
-/// Customized version of `ruma_client_api::r0::keys::get_keys::Request`,
-/// without any references.
+/// Customized version of
+/// `ruma_client_api::r0::keys::get_keys::Request`, without any
+/// references.
 #[derive(Clone, Debug)]
 pub struct KeysQueryRequest {
     /// The time (in milliseconds) to wait when downloading keys from remote
diff --git a/matrix_sdk_crypto/src/session_manager/group_sessions.rs b/matrix_sdk_crypto/src/session_manager/group_sessions.rs
index b1d2ce6c..26269716 100644
--- a/matrix_sdk_crypto/src/session_manager/group_sessions.rs
+++ b/matrix_sdk_crypto/src/session_manager/group_sessions.rs
@@ -19,15 +19,14 @@ use std::{
 
 use dashmap::DashMap;
 use futures::future::join_all;
-use matrix_sdk_common::{
-    api::r0::to_device::DeviceIdOrAllDevices,
+use matrix_sdk_common::{executor::spawn, uuid::Uuid};
+use ruma::{
+    api::client::r0::to_device::DeviceIdOrAllDevices,
     events::{
         room::{encrypted::EncryptedEventContent, history_visibility::HistoryVisibility},
         AnyMessageEventContent, EventType,
     },
-    executor::spawn,
-    identifiers::{DeviceId, DeviceIdBox, RoomId, UserId},
-    uuid::Uuid,
+    DeviceId, DeviceIdBox, RoomId, UserId,
 };
 use serde_json::Value;
 use tracing::{debug, info, trace};
@@ -544,13 +543,15 @@ impl GroupSessionManager {
 
 #[cfg(test)]
 mod test {
-    use matrix_sdk_common::{
-        api::r0::keys::{claim_keys, get_keys},
-        identifiers::{room_id, user_id, DeviceIdBox, UserId},
-        uuid::Uuid,
-        IncomingResponse,
-    };
+    use matrix_sdk_common::uuid::Uuid;
     use matrix_sdk_test::response_from_file;
+    use ruma::{
+        api::{
+            client::r0::keys::{claim_keys, get_keys},
+            IncomingResponse,
+        },
+        room_id, user_id, DeviceIdBox, UserId,
+    };
     use serde_json::Value;
 
     use crate::{EncryptionSettings, OlmMachine};
diff --git a/matrix_sdk_crypto/src/session_manager/sessions.rs b/matrix_sdk_crypto/src/session_manager/sessions.rs
index e0634051..657de170 100644
--- a/matrix_sdk_crypto/src/session_manager/sessions.rs
+++ b/matrix_sdk_crypto/src/session_manager/sessions.rs
@@ -15,15 +15,15 @@
 use std::{collections::BTreeMap, sync::Arc, time::Duration};
 
 use dashmap::{DashMap, DashSet};
-use matrix_sdk_common::{
-    api::r0::{
+use matrix_sdk_common::uuid::Uuid;
+use ruma::{
+    api::client::r0::{
         keys::claim_keys::{Request as KeysClaimRequest, Response as KeysClaimResponse},
         to_device::DeviceIdOrAllDevices,
     },
     assign,
     events::EventType,
-    identifiers::{DeviceId, DeviceIdBox, DeviceKeyAlgorithm, UserId},
-    uuid::Uuid,
+    DeviceId, DeviceIdBox, DeviceKeyAlgorithm, UserId,
 };
 use serde_json::{json, value::to_raw_value};
 use tracing::{error, info, warn};
@@ -297,12 +297,12 @@ mod test {
     use std::{collections::BTreeMap, sync::Arc};
 
     use dashmap::DashMap;
-    use matrix_sdk_common::{
-        api::r0::keys::claim_keys::Response as KeyClaimResponse,
-        identifiers::{user_id, DeviceIdBox, UserId},
-        locks::Mutex,
-    };
+    use matrix_sdk_common::locks::Mutex;
     use matrix_sdk_test::async_test;
+    use ruma::{
+        api::client::r0::keys::claim_keys::Response as KeyClaimResponse, user_id, DeviceIdBox,
+        UserId,
+    };
 
     use super::SessionManager;
     use crate::{
@@ -401,10 +401,8 @@ mod test {
     #[async_test]
     #[cfg(target_os = "linux")]
     async fn session_unwedging() {
-        use matrix_sdk_common::{
-            identifiers::DeviceKeyAlgorithm,
-            instant::{Duration, Instant},
-        };
+        use matrix_sdk_common::instant::{Duration, Instant};
+        use ruma::DeviceKeyAlgorithm;
 
         let manager = session_manager().await;
         let bob = bob_account();
diff --git a/matrix_sdk_crypto/src/store/caches.rs b/matrix_sdk_crypto/src/store/caches.rs
index 0fba1cfa..abdd972c 100644
--- a/matrix_sdk_crypto/src/store/caches.rs
+++ b/matrix_sdk_crypto/src/store/caches.rs
@@ -20,10 +20,8 @@
 use std::{collections::HashMap, sync::Arc};
 
 use dashmap::DashMap;
-use matrix_sdk_common::{
-    identifiers::{DeviceId, DeviceIdBox, RoomId, UserId},
-    locks::Mutex,
-};
+use matrix_sdk_common::locks::Mutex;
+use ruma::{DeviceId, DeviceIdBox, RoomId, UserId};
 
 use crate::{
     identities::ReadOnlyDevice,
@@ -184,7 +182,7 @@ impl DeviceStore {
 
 #[cfg(test)]
 mod test {
-    use matrix_sdk_common::identifiers::room_id;
+    use ruma::room_id;
 
     use crate::{
         identities::device::test::get_device,
diff --git a/matrix_sdk_crypto/src/store/memorystore.rs b/matrix_sdk_crypto/src/store/memorystore.rs
index 1b3804c5..348b0c79 100644
--- a/matrix_sdk_crypto/src/store/memorystore.rs
+++ b/matrix_sdk_crypto/src/store/memorystore.rs
@@ -18,13 +18,8 @@ use std::{
 };
 
 use dashmap::{DashMap, DashSet};
-use matrix_sdk_common::{
-    async_trait,
-    events::room_key_request::RequestedKeyInfo,
-    identifiers::{DeviceId, DeviceIdBox, RoomId, UserId},
-    locks::Mutex,
-    uuid::Uuid,
-};
+use matrix_sdk_common::{async_trait, locks::Mutex, uuid::Uuid};
+use ruma::{events::room_key_request::RequestedKeyInfo, DeviceId, DeviceIdBox, RoomId, UserId};
 
 use super::{
     caches::{DeviceStore, GroupSessionStore, SessionStore},
@@ -273,7 +268,7 @@ impl CryptoStore for MemoryStore {
 
 #[cfg(test)]
 mod test {
-    use matrix_sdk_common::identifiers::room_id;
+    use ruma::room_id;
 
     use crate::{
         identities::device::test::get_device,
diff --git a/matrix_sdk_crypto/src/store/mod.rs b/matrix_sdk_crypto/src/store/mod.rs
index c22a7281..1f41609d 100644
--- a/matrix_sdk_crypto/src/store/mod.rs
+++ b/matrix_sdk_crypto/src/store/mod.rs
@@ -26,7 +26,7 @@
 //! #     OlmMachine,
 //! #     store::MemoryStore,
 //! # };
-//! # use matrix_sdk_common::identifiers::{user_id, DeviceIdBox};
+//! # use ruma::{user_id, DeviceIdBox};
 //! # let user_id = user_id!("@example:localhost");
 //! # let device_id: DeviceIdBox = "TEST".into();
 //! let store = Box::new(MemoryStore::new());
@@ -51,20 +51,17 @@ use std::{
     sync::Arc,
 };
 
-use matrix_sdk_common::{
-    async_trait,
+use matrix_sdk_common::{async_trait, locks::Mutex, uuid::Uuid, AsyncTraitDeps};
+pub use memorystore::MemoryStore;
+use olm_rs::errors::{OlmAccountError, OlmGroupSessionError, OlmSessionError};
+pub use pickle_key::{EncryptedPickleKey, PickleKey};
+use ruma::{
     events::room_key_request::RequestedKeyInfo,
     identifiers::{
         DeviceId, DeviceIdBox, DeviceKeyAlgorithm, Error as IdentifierValidationError, RoomId,
         UserId,
     },
-    locks::Mutex,
-    uuid::Uuid,
-    AsyncTraitDeps,
 };
-pub use memorystore::MemoryStore;
-use olm_rs::errors::{OlmAccountError, OlmGroupSessionError, OlmSessionError};
-pub use pickle_key::{EncryptedPickleKey, PickleKey};
 use serde_json::Error as SerdeError;
 use thiserror::Error;
 
diff --git a/matrix_sdk_crypto/src/store/sled.rs b/matrix_sdk_crypto/src/store/sled.rs
index 90117cfd..afa41a05 100644
--- a/matrix_sdk_crypto/src/store/sled.rs
+++ b/matrix_sdk_crypto/src/store/sled.rs
@@ -20,14 +20,9 @@ use std::{
 };
 
 use dashmap::DashSet;
-use matrix_sdk_common::{
-    async_trait,
-    events::room_key_request::RequestedKeyInfo,
-    identifiers::{DeviceId, DeviceIdBox, RoomId, UserId},
-    locks::Mutex,
-    uuid,
-};
+use matrix_sdk_common::{async_trait, locks::Mutex, uuid};
 use olm_rs::{account::IdentityKeys, PicklingMode};
+use ruma::{events::room_key_request::RequestedKeyInfo, DeviceId, DeviceIdBox, RoomId, UserId};
 pub use sled::Error;
 use sled::{
     transaction::{ConflictableTransactionError, TransactionError},
@@ -758,14 +753,14 @@ impl CryptoStore for SledStore {
 mod test {
     use std::collections::BTreeMap;
 
-    use matrix_sdk_common::{
-        api::r0::keys::SignedKey,
-        events::room_key_request::RequestedKeyInfo,
-        identifiers::{room_id, user_id, DeviceId, EventEncryptionAlgorithm, UserId},
-        uuid::Uuid,
-    };
+    use matrix_sdk_common::uuid::Uuid;
     use matrix_sdk_test::async_test;
     use olm_rs::outbound_group_session::OlmOutboundGroupSession;
+    use ruma::{
+        api::client::r0::keys::SignedKey,
+        events::room_key_request::RequestedKeyInfo,
+        identifiers::{room_id, user_id, DeviceId, EventEncryptionAlgorithm, UserId},
+    };
     use tempfile::tempdir;
 
     use super::{CryptoStore, OutgoingKeyRequest, SledStore};
diff --git a/matrix_sdk_crypto/src/verification/cache.rs b/matrix_sdk_crypto/src/verification/cache.rs
index 1d42b711..975f9fd6 100644
--- a/matrix_sdk_crypto/src/verification/cache.rs
+++ b/matrix_sdk_crypto/src/verification/cache.rs
@@ -15,10 +15,8 @@
 use std::sync::Arc;
 
 use dashmap::DashMap;
-use matrix_sdk_common::{
-    identifiers::{DeviceId, UserId},
-    uuid::Uuid,
-};
+use matrix_sdk_common::uuid::Uuid;
+use ruma::{DeviceId, UserId};
 
 use super::{event_enums::OutgoingContent, sas::content_to_request, Sas, Verification};
 use crate::{OutgoingRequest, RoomMessageRequest};
diff --git a/matrix_sdk_crypto/src/verification/event_enums.rs b/matrix_sdk_crypto/src/verification/event_enums.rs
index f787b00f..c623a29a 100644
--- a/matrix_sdk_crypto/src/verification/event_enums.rs
+++ b/matrix_sdk_crypto/src/verification/event_enums.rs
@@ -17,7 +17,7 @@ use std::{
     convert::{TryFrom, TryInto},
 };
 
-use matrix_sdk_common::{
+use ruma::{
     events::{
         key::verification::{
             accept::{AcceptEventContent, AcceptMethod, AcceptToDeviceEventContent},
@@ -34,7 +34,7 @@ use matrix_sdk_common::{
         AnyMessageEvent, AnyMessageEventContent, AnyToDeviceEvent, AnyToDeviceEventContent,
     },
     identifiers::{DeviceId, RoomId, UserId},
-    CanonicalJsonValue,
+    serde::CanonicalJsonValue,
 };
 
 use super::FlowId;
@@ -676,7 +676,7 @@ impl TryFrom<ToDeviceRequest> for OutgoingContent {
     type Error = ();
 
     fn try_from(value: ToDeviceRequest) -> Result<Self, Self::Error> {
-        use matrix_sdk_common::events::EventType;
+        use ruma::events::EventType;
         use serde_json::Value;
 
         let json: Value = serde_json::from_str(
diff --git a/matrix_sdk_crypto/src/verification/machine.rs b/matrix_sdk_crypto/src/verification/machine.rs
index f474e220..371c78de 100644
--- a/matrix_sdk_crypto/src/verification/machine.rs
+++ b/matrix_sdk_crypto/src/verification/machine.rs
@@ -15,11 +15,8 @@
 use std::{convert::TryFrom, sync::Arc};
 
 use dashmap::DashMap;
-use matrix_sdk_common::{
-    identifiers::{DeviceId, UserId},
-    locks::Mutex,
-    uuid::Uuid,
-};
+use matrix_sdk_common::{locks::Mutex, uuid::Uuid};
+use ruma::{DeviceId, UserId};
 use tracing::{info, warn};
 
 use super::{
@@ -314,10 +311,8 @@ mod test {
         time::{Duration, Instant},
     };
 
-    use matrix_sdk_common::{
-        identifiers::{DeviceId, UserId},
-        locks::Mutex,
-    };
+    use matrix_sdk_common::locks::Mutex;
+    use ruma::{DeviceId, UserId};
 
     use super::{Sas, VerificationMachine};
     use crate::{
diff --git a/matrix_sdk_crypto/src/verification/mod.rs b/matrix_sdk_crypto/src/verification/mod.rs
index b237fec2..736b9656 100644
--- a/matrix_sdk_crypto/src/verification/mod.rs
+++ b/matrix_sdk_crypto/src/verification/mod.rs
@@ -22,8 +22,9 @@ use std::sync::Arc;
 
 use event_enums::OutgoingContent;
 pub use machine::VerificationMachine;
-use matrix_sdk_common::{
-    api::r0::keys::upload_signatures::Request as SignatureUploadRequest,
+pub use requests::VerificationRequest;
+use ruma::{
+    api::client::r0::keys::upload_signatures::Request as SignatureUploadRequest,
     events::{
         key::verification::{
             cancel::{CancelCode, CancelEventContent, CancelToDeviceEventContent},
@@ -32,9 +33,8 @@ use matrix_sdk_common::{
         },
         AnyMessageEventContent, AnyToDeviceEventContent,
     },
-    identifiers::{DeviceId, EventId, RoomId, UserId},
+    DeviceId, EventId, RoomId, UserId,
 };
-pub use requests::VerificationRequest;
 pub use sas::{AcceptSettings, Sas};
 use tracing::{error, info, trace, warn};
 
@@ -445,9 +445,9 @@ impl IdentitiesBeingVerified {
 
 #[cfg(test)]
 pub(crate) mod test {
-    use matrix_sdk_common::{
+    use ruma::{
         events::{AnyToDeviceEvent, AnyToDeviceEventContent, EventType, ToDeviceEvent},
-        identifiers::UserId,
+        UserId,
     };
     use serde_json::Value;
 
diff --git a/matrix_sdk_crypto/src/verification/requests.rs b/matrix_sdk_crypto/src/verification/requests.rs
index ea41d749..819d2dc4 100644
--- a/matrix_sdk_crypto/src/verification/requests.rs
+++ b/matrix_sdk_crypto/src/verification/requests.rs
@@ -16,8 +16,9 @@
 
 use std::sync::{Arc, Mutex};
 
-use matrix_sdk_common::{
-    api::r0::to_device::DeviceIdOrAllDevices,
+use matrix_sdk_common::uuid::Uuid;
+use ruma::{
+    api::client::r0::to_device::DeviceIdOrAllDevices,
     events::{
         key::verification::{
             cancel::CancelCode,
@@ -29,9 +30,7 @@ use matrix_sdk_common::{
         room::message::KeyVerificationRequestEventContent,
         AnyMessageEventContent, AnyToDeviceEventContent,
     },
-    identifiers::{DeviceId, DeviceIdBox, EventId, RoomId, UserId},
-    uuid::Uuid,
-    MilliSecondsSinceUnixEpoch,
+    DeviceId, DeviceIdBox, EventId, MilliSecondsSinceUnixEpoch, RoomId, UserId,
 };
 use tracing::{info, warn};
 
@@ -677,8 +676,8 @@ struct Done {}
 mod test {
     use std::convert::TryFrom;
 
-    use matrix_sdk_common::identifiers::{event_id, room_id, DeviceIdBox, UserId};
     use matrix_sdk_test::async_test;
+    use ruma::{event_id, room_id, DeviceIdBox, UserId};
 
     use super::VerificationRequest;
     use crate::{
diff --git a/matrix_sdk_crypto/src/verification/sas/helpers.rs b/matrix_sdk_crypto/src/verification/sas/helpers.rs
index fd365037..4d4794e5 100644
--- a/matrix_sdk_crypto/src/verification/sas/helpers.rs
+++ b/matrix_sdk_crypto/src/verification/sas/helpers.rs
@@ -14,8 +14,10 @@
 
 use std::{collections::BTreeMap, convert::TryInto};
 
-use matrix_sdk_common::{
-    api::r0::to_device::DeviceIdOrAllDevices,
+use matrix_sdk_common::uuid::Uuid;
+use olm_rs::sas::OlmSas;
+use ruma::{
+    api::client::r0::to_device::DeviceIdOrAllDevices,
     events::{
         key::verification::{
             cancel::CancelCode,
@@ -24,10 +26,8 @@ use matrix_sdk_common::{
         },
         AnyMessageEventContent, AnyToDeviceEventContent, EventType,
     },
-    identifiers::{DeviceKeyAlgorithm, DeviceKeyId, UserId},
-    uuid::Uuid,
+    DeviceKeyAlgorithm, DeviceKeyId, UserId,
 };
-use olm_rs::sas::OlmSas;
 use sha2::{Digest, Sha256};
 use tracing::{trace, warn};
 
@@ -557,8 +557,8 @@ pub fn content_to_request(
 
 #[cfg(test)]
 mod test {
-    use matrix_sdk_common::events::key::verification::start::StartToDeviceEventContent;
     use proptest::prelude::*;
+    use ruma::events::key::verification::start::StartToDeviceEventContent;
     use serde_json::json;
 
     use super::{
diff --git a/matrix_sdk_crypto/src/verification/sas/inner_sas.rs b/matrix_sdk_crypto/src/verification/sas/inner_sas.rs
index c509cca9..b9b37475 100644
--- a/matrix_sdk_crypto/src/verification/sas/inner_sas.rs
+++ b/matrix_sdk_crypto/src/verification/sas/inner_sas.rs
@@ -16,9 +16,9 @@ use std::sync::Arc;
 #[cfg(test)]
 use std::time::Instant;
 
-use matrix_sdk_common::{
+use ruma::{
     events::key::verification::{cancel::CancelCode, ShortAuthenticationString},
-    identifiers::{EventId, RoomId, UserId},
+    EventId, RoomId, UserId,
 };
 
 use super::{
diff --git a/matrix_sdk_crypto/src/verification/sas/mod.rs b/matrix_sdk_crypto/src/verification/sas/mod.rs
index 827c62dc..d8b0330f 100644
--- a/matrix_sdk_crypto/src/verification/sas/mod.rs
+++ b/matrix_sdk_crypto/src/verification/sas/mod.rs
@@ -22,8 +22,9 @@ use std::time::Instant;
 
 pub use helpers::content_to_request;
 use inner_sas::InnerSas;
-use matrix_sdk_common::{
-    api::r0::keys::upload_signatures::Request as SignatureUploadRequest,
+use matrix_sdk_common::uuid::Uuid;
+use ruma::{
+    api::client::r0::keys::upload_signatures::Request as SignatureUploadRequest,
     events::{
         key::verification::{
             accept::{AcceptEventContent, AcceptMethod, AcceptToDeviceEventContent},
@@ -32,8 +33,7 @@ use matrix_sdk_common::{
         },
         AnyMessageEventContent, AnyToDeviceEventContent,
     },
-    identifiers::{DeviceId, EventId, RoomId, UserId},
-    uuid::Uuid,
+    DeviceId, EventId, RoomId, UserId,
 };
 use tracing::trace;
 
@@ -486,7 +486,7 @@ impl AcceptSettings {
 mod test {
     use std::{convert::TryFrom, sync::Arc};
 
-    use matrix_sdk_common::identifiers::{DeviceId, UserId};
+    use ruma::{DeviceId, UserId};
 
     use super::Sas;
     use crate::{
diff --git a/matrix_sdk_crypto/src/verification/sas/sas_state.rs b/matrix_sdk_crypto/src/verification/sas/sas_state.rs
index ac571309..96373f38 100644
--- a/matrix_sdk_crypto/src/verification/sas/sas_state.rs
+++ b/matrix_sdk_crypto/src/verification/sas/sas_state.rs
@@ -19,7 +19,9 @@ use std::{
     time::{Duration, Instant},
 };
 
-use matrix_sdk_common::{
+use matrix_sdk_common::uuid::Uuid;
+use olm_rs::sas::OlmSas;
+use ruma::{
     events::{
         key::verification::{
             accept::{
@@ -38,10 +40,8 @@ use matrix_sdk_common::{
         },
         AnyMessageEventContent, AnyToDeviceEventContent,
     },
-    identifiers::{DeviceId, EventId, RoomId, UserId},
-    uuid::Uuid,
+    DeviceId, EventId, RoomId, UserId,
 };
-use olm_rs::sas::OlmSas;
 use tracing::info;
 
 use super::{
@@ -1088,12 +1088,12 @@ impl SasState<Cancelled> {
 mod test {
     use std::convert::TryFrom;
 
-    use matrix_sdk_common::{
+    use ruma::{
         events::key::verification::{
             accept::{AcceptMethod, CustomContent},
             start::{CustomContent as CustomStartContent, StartMethod},
         },
-        identifiers::{DeviceId, UserId},
+        DeviceId, UserId,
     };
 
     use super::{Accepted, Created, SasState, Started};