diff --git a/pubspec.lock b/pubspec.lock
index bbc68045..8f1a59d7 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1209,11 +1209,12 @@ packages:
   matrix:
     dependency: "direct main"
     description:
-      name: matrix
-      sha256: f744a1408826b7caca229740b5e87b367654e87338cf0189784e3bd46518f028
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.29.3"
+      path: "."
+      ref: "krille/create-missing-object-box"
+      resolved-ref: f3e631b2eb477097c8fbfa188f81e6b80ee1dc58
+      url: "https://github.com/famedly/matrix-dart-sdk.git"
+    source: git
+    version: "0.29.2"
   meta:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 8226f7d7..673d8f7b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -64,7 +64,10 @@ dependencies:
   keyboard_shortcuts: ^0.1.4
   latlong2: ^0.9.1
   linkify: ^5.0.0
-  matrix: ^0.29.3
+  matrix:
+    git:
+      url: https://github.com/famedly/matrix-dart-sdk.git
+      ref: krille/create-missing-object-box
   package_info_plus: ^6.0.0
   pasteboard: ^0.2.0
   path: ^1.9.0