diff --git a/matrix_sdk_crypto/src/identities/user.rs b/matrix_sdk_crypto/src/identities/user.rs
index a53c9570..dc87243b 100644
--- a/matrix_sdk_crypto/src/identities/user.rs
+++ b/matrix_sdk_crypto/src/identities/user.rs
@@ -361,7 +361,7 @@ impl<'a> IntoIterator for &'a SelfSigningPubkey {
 }
 
 /// Enum over the different user identity types we can have.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum UserIdentities {
     /// Our own user identity.
     Own(OwnUserIdentity),
@@ -567,7 +567,7 @@ impl UserIdentity {
 ///
 /// This identity can verify other identities as well as devices belonging to
 /// the identity.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct OwnUserIdentity {
     user_id: Arc<UserId>,
     master_key: MasterPubkey,
diff --git a/matrix_sdk_crypto/src/olm/account.rs b/matrix_sdk_crypto/src/olm/account.rs
index 6799e55d..cab40879 100644
--- a/matrix_sdk_crypto/src/olm/account.rs
+++ b/matrix_sdk_crypto/src/olm/account.rs
@@ -100,7 +100,7 @@ pub struct OlmDecryptionInfo {
 /// A hash of a succesfully decrypted Olm message.
 ///
 /// Can be used to check if a message has been replayed to us.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct OlmMessageHash {
     /// The curve25519 key of the sender that sent us the Olm message.
     pub sender_key: String,