diff --git a/.gitmodules b/.gitmodules
index 8419b206e4a39..d50179182a28a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -9,7 +9,7 @@
 	url = https://github.com/PaulLereverend/NextcloudExtract
 [submodule "apps-external/viewer"]
 	path = apps-external/viewer
-	url = https://github.com/nextcloud/viewer.git
+	url = git@github.com:IONOS-Productivity/nc-viewer.git
 [submodule "apps-custom/simplesettings"]
 	path = apps-custom/simplesettings
 	url = git@github.com:IONOS-Productivity/nc-simplesettings.git
diff --git a/apps-external/viewer b/apps-external/viewer
index d4a79861e43db..a46f5a31fb198 160000
--- a/apps-external/viewer
+++ b/apps-external/viewer
@@ -1 +1 @@
-Subproject commit d4a79861e43db8a512c421b7f69dda950ccd9e45
+Subproject commit a46f5a31fb1988c3b20d353f24be68d50835286a