diff --git a/.gitmodules b/.gitmodules
index 833536e33689e..1e02e756bea2d 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -49,3 +49,6 @@
 [submodule "apps-external/groupquota"]
 	path = apps-external/groupquota
 	url = git@github.com:nextcloud/groupquota.git
+[submodule "apps-external/richdocuments"]
+	path = apps-external/richdocuments
+	url = https://github.com/nextcloud/richdocuments.git
diff --git a/apps-external/richdocuments b/apps-external/richdocuments
new file mode 160000
index 0000000000000..cd31e88e65042
--- /dev/null
+++ b/apps-external/richdocuments
@@ -0,0 +1 @@
+Subproject commit cd31e88e65042a6c043b288855d5cefc4611b1a8