diff --git a/CHANGES.md b/CHANGES.md
index 27356b3cb..8207d4844 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,25 @@
 # Changelog
 
+## Dendrite 0.4.1 (2021-07-26)
+
+### Features
+
+* Support for room version 7 has been added
+* Key notary support is now more complete, allowing Dendrite to be used as a notary server for looking up signing keys
+* State resolution v2 performance has been optimised further by caching the create event, power levels and join rules in memory instead of parsing them repeatedly
+* The media API now handles cases where the maximum file size is configured to be less than 0 for unlimited size
+* The `initial_state` in a `/createRoom` request is now respected when creating a room
+* Code paths for checking if servers are joined to rooms have been optimised significantly
+
+### Fixes
+
+* A bug resulting in `cannot xref null state block with snapshot` during the new state storage migration has been fixed
+* Invites are now retired correctly when rejecting an invite from a remote server which is no longer reachable
+* The DNS cache `cache_lifetime` option is now handled correctly (contributed by [S7evinK](https://github.com/S7evinK))
+* Invalid events in a room join response are now dropped correctly, rather than failing the entire join
+* The `prev_state` of an event will no longer be populated incorrectly to the state of the current event
+* Receiving an invite to an unsupported room version will now correctly return the `M_UNSUPPORTED_ROOM_VERSION` error code instead of `M_BAD_JSON` (contributed by [meenal06](https://github.com/meenal06))
+
 ## Dendrite 0.4.0 (2021-07-12)
 
 ### Features
diff --git a/federationapi/routing/invite.go b/federationapi/routing/invite.go
index 8795118ee..468659651 100644
--- a/federationapi/routing/invite.go
+++ b/federationapi/routing/invite.go
@@ -40,22 +40,29 @@ func InviteV2(
 ) util.JSONResponse {
 	inviteReq := gomatrixserverlib.InviteV2Request{}
 	err := json.Unmarshal(request.Content(), &inviteReq)
-	switch err.(type) {
+	switch e := err.(type) {
+	case gomatrixserverlib.UnsupportedRoomVersionError:
+		return util.JSONResponse{
+			Code: http.StatusBadRequest,
+			JSON: jsonerror.UnsupportedRoomVersion(
+				fmt.Sprintf("Room version %q is not supported by this server.", e.Version),
+			),
+		}
 	case gomatrixserverlib.BadJSONError:
 		return util.JSONResponse{
 			Code: http.StatusBadRequest,
 			JSON: jsonerror.BadJSON(err.Error()),
 		}
 	case nil:
+		return processInvite(
+			httpReq.Context(), true, inviteReq.Event(), inviteReq.RoomVersion(), inviteReq.InviteRoomState(), roomID, eventID, cfg, rsAPI, keys,
+		)
 	default:
 		return util.JSONResponse{
 			Code: http.StatusBadRequest,
 			JSON: jsonerror.NotJSON("The request body could not be decoded into an invite request. " + err.Error()),
 		}
 	}
-	return processInvite(
-		httpReq.Context(), true, inviteReq.Event(), inviteReq.RoomVersion(), inviteReq.InviteRoomState(), roomID, eventID, cfg, rsAPI, keys,
-	)
 }
 
 // InviteV1 implements /_matrix/federation/v1/invite/{roomID}/{eventID}
diff --git a/internal/version.go b/internal/version.go
index 37f0c30d3..55997ffc4 100644
--- a/internal/version.go
+++ b/internal/version.go
@@ -17,7 +17,7 @@ var build string
 const (
 	VersionMajor = 0
 	VersionMinor = 4
-	VersionPatch = 0
+	VersionPatch = 1
 	VersionTag   = "" // example: "rc1"
 )
 
diff --git a/roomserver/storage/postgres/deltas/2021041615092700_state_blocks_refactor.go b/roomserver/storage/postgres/deltas/2021041615092700_state_blocks_refactor.go
index 26d88e00f..940a920e1 100644
--- a/roomserver/storage/postgres/deltas/2021041615092700_state_blocks_refactor.go
+++ b/roomserver/storage/postgres/deltas/2021041615092700_state_blocks_refactor.go
@@ -174,6 +174,9 @@ func UpStateBlocksRefactor(tx *sql.Tx) error {
 			err = tx.QueryRow(
 				`SELECT event_nid FROM roomserver_events WHERE state_snapshot_nid = $1 AND event_type_nid = 1`, s.StateSnapshotNID,
 			).Scan(&createEventNID)
+			if err == sql.ErrNoRows {
+				continue
+			}
 			if err != nil {
 				return fmt.Errorf("cannot xref null state block with snapshot %d: %s", s.StateSnapshotNID, err)
 			}