diff --git a/crates/ruma-events/src/key/verification/cancel.rs b/crates/ruma-events/src/key/verification/cancel.rs
index 9264e9ed..806ba7b3 100644
--- a/crates/ruma-events/src/key/verification/cancel.rs
+++ b/crates/ruma-events/src/key/verification/cancel.rs
@@ -121,6 +121,14 @@ pub enum CancelCode {
     #[ruma_enum(rename = "m.accepted")]
     Accepted,
 
+    /// The device receiving this error can ignore the verification request.
+    #[ruma_enum(rename = "m.mismatched_commitment")]
+    MismatchedCommitment,
+
+    /// The SAS did not match.
+    #[ruma_enum(rename = "m.mismatched_sas")]
+    MismatchedSas,
+
     #[doc(hidden)]
     _Custom(String),
 }