diff --git a/kotlin/lib/src/main/java/im/vector/app/features/analytics/plan/Error.kt b/kotlin/lib/src/main/java/im/vector/app/features/analytics/plan/Error.kt
index 98553b9..868e89d 100644
--- a/kotlin/lib/src/main/java/im/vector/app/features/analytics/plan/Error.kt
+++ b/kotlin/lib/src/main/java/im/vector/app/features/analytics/plan/Error.kt
@@ -78,6 +78,13 @@ data class Error(
 
     enum class Name {
 
+        /**
+         * E2EE domain error. Decryption failed for a message sent before you
+         * were in the room (shared history visibility and support for sharing
+         * past keys is not available/supported).
+         */
+        ExpectedDueToMembership,
+
         /**
          * E2EE domain error. Decryption failed for a message sent before the
          * device logged in, and key backup is not enabled.
diff --git a/schemas/Error.json b/schemas/Error.json
index f0d2c7e..ddc0b6f 100644
--- a/schemas/Error.json
+++ b/schemas/Error.json
@@ -21,6 +21,7 @@
         {"const": "OlmUnspecifiedError", "description": "E2EE domain error. Any other decryption error (missing field, format errors...)."},
         {"const": "UnknownError", "description": "E2EE domain error. Decryption failed due to unknown error."},
         {"const": "HistoricalMessage", "description": "E2EE domain error. Decryption failed for a message sent before the device logged in, and key backup is not enabled."},
+        {"const": "ExpectedDueToMembership", "description": "E2EE domain error. Decryption failed for a message sent before you were in the room (shared history visibility and support for sharing past keys is not available/supported)."},
         {"const": "VoipUserHangup", "description": "VOIP domain error. The user hung up the call."},
         {"const": "VoipIceFailed", "description": "VOIP domain error. ICE negotiation failed."},
         {"const": "VoipInviteTimeout", "description": "VOIP domain error. The call invite timed out."},
diff --git a/types/swift/Error.swift b/types/swift/Error.swift
index a0700b8..8710643 100644
--- a/types/swift/Error.swift
+++ b/types/swift/Error.swift
@@ -66,6 +66,8 @@ extension AnalyticsEvent {
         }
 
         public enum Name: String {
+            /// E2EE domain error. Decryption failed for a message sent before you were in the room (shared history visibility and support for sharing past keys is not available/supported).
+            case ExpectedDueToMembership
             /// E2EE domain error. Decryption failed for a message sent before the device logged in, and key backup is not enabled.
             case HistoricalMessage
             /// E2EE domain error. The room key is known but is ratcheted (index > 0).