diff --git a/vendor/manifest b/vendor/manifest
index 95c4b6f8..425cc8f1 100644
--- a/vendor/manifest
+++ b/vendor/manifest
@@ -98,7 +98,7 @@
 		{
 			"importpath": "github.com/matrix-org/gomatrixserverlib",
 			"repository": "https://github.com/matrix-org/gomatrixserverlib",
-			"revision": "30652b26ec2e83b97c941eb1c293bf7d67340f74",
+			"revision": "768a8767051a4aca7f5e41f912954ae04d5f1efb",
 			"branch": "master"
 		},
 		{
diff --git a/vendor/src/github.com/matrix-org/gomatrixserverlib/event.go b/vendor/src/github.com/matrix-org/gomatrixserverlib/event.go
index 94de3518..e8c2de0f 100644
--- a/vendor/src/github.com/matrix-org/gomatrixserverlib/event.go
+++ b/vendor/src/github.com/matrix-org/gomatrixserverlib/event.go
@@ -252,10 +252,41 @@ func (e Event) Redact() Event {
 		// This is unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
 		panic(fmt.Errorf("gomatrixserverlib: invalid event %v", err))
 	}
-	return Event{
+	result := Event{
 		redacted:  true,
 		eventJSON: eventJSON,
 	}
+	if err = json.Unmarshal(eventJSON, &result.fields); err != nil {
+		// This is unreachable for events created with EventBuilder.Build or NewEventFromUntrustedJSON
+		panic(fmt.Errorf("gomatrixserverlib: invalid event %v", err))
+	}
+	return result
+}
+
+// SetUnsigned sets the unsigned key of the event.
+// Returns a copy of the event with the "unsigned" key set.
+func (e Event) SetUnsigned(unsigned interface{}) (Event, error) {
+	var eventAsMap map[string]rawJSON
+	var err error
+	if err = json.Unmarshal(e.eventJSON, &eventAsMap); err != nil {
+		return Event{}, err
+	}
+	unsignedJSON, err := json.Marshal(unsigned)
+	if err != nil {
+		return Event{}, err
+	}
+	eventAsMap["unsigned"] = unsignedJSON
+	eventJSON, err := json.Marshal(eventAsMap)
+	if err != nil {
+		return Event{}, err
+	}
+	if eventJSON, err = CanonicalJSON(eventJSON); err != nil {
+		return Event{}, err
+	}
+	result := e
+	result.eventJSON = eventJSON
+	result.fields.Unsigned = unsignedJSON
+	return result, nil
 }
 
 // EventReference returns an EventReference for the event.