diff --git a/.gitmodules b/.gitmodules
index 85f73fb..c5e899e 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,21 +1,24 @@
 [submodule "extensions/Collection"]
 	path = extensions/Collection
 	url = https://github.com/WikiToLearn/mediawiki-extensions-Collection
 [submodule "extensions/EmbedVideo"]
 	path = extensions/EmbedVideo
 	url = https://github.com/Alexia/mediawiki-embedvideo.git
 [submodule "Neverland"]
 	path = Neverland
 	url = https://github.com/WikiToLearn/Neverland.git
 [submodule "extensions/EasyLink"]
 	path = extensions/EasyLink
 	url = https://github.com/WikiToLearn/EasyLink.git
 [submodule "extensions/Piwik"]
 	path = extensions/Piwik
 	url = https://github.com/DaSchTour/piwik-mediawiki-extension.git
 [submodule "extensions/SpeechToText"]
 	path = extensions/SpeechToText
 	url = https://github.com/WikiToLearn/SpeechToText.git
 [submodule "extensions/WikiToLearnACL"]
 	path = extensions/WikiToLearnACL
 	url = https://github.com/WikiToLearn/WikiToLearnACL.git
+[submodule "CollaborativeEditor"]
+	path = CollaborativeEditor
+	url = https://github.com/WikiToLearn/CollaborativeEditor
diff --git a/CollaborativeEditor b/CollaborativeEditor
new file mode 160000
index 0000000..9761ce8
--- /dev/null
+++ b/CollaborativeEditor
@@ -0,0 +1 @@
+Subproject commit 9761ce8492c840851da774d963dd2cb5181bfab1