diff --git a/bbb-webrtc-sfu b/bbb-webrtc-sfu
index 2a6343f..2b77265 160000
--- a/bbb-webrtc-sfu
+++ b/bbb-webrtc-sfu
@@ -1 +1 @@
-Subproject commit 2a6343f6ccdf16edaf50a73b776bf54ccad39b23
+Subproject commit 2b77265d05625d5df8126ced381df5ccb59160a6
diff --git a/scripts/upgrade b/scripts/upgrade
index 07bdb12..f10213e 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -17,8 +17,9 @@ else
     sed -i 's/EXTERNAL_IP=/EXTERNAL_IPv4=/' .env
 
     echo ""
-    echo "# pull newest bbb-webrtc-sfu"
-    git submodule update --remote 
+    echo "# pull newest git submodules"
+    git submodule init
+    git submodule update
 
 
     echo ""