diff --git a/mediawiki/CheckUser b/mediawiki/CheckUser
new file mode 160000
index 0000000..22076b9
--- /dev/null
+++ b/mediawiki/CheckUser
@@ -0,0 +1 @@
+Subproject commit 22076b9dc420b74e0021d3d03ee5357bd5fe5dc6
diff --git a/mediawiki/Dockerfile b/mediawiki/Dockerfile
index f415426..2d37339 100644
--- a/mediawiki/Dockerfile
+++ b/mediawiki/Dockerfile
@@ -39,10 +39,6 @@ RUN git clone --depth 1 \
     https://gerrit.wikimedia.org/r/mediawiki/extensions/cldr \
     /var/www/html/extensions/cldr
 
-RUN git clone --depth 1 \
-    https://gerrit.wikimedia.org/r/mediawiki/extensions/CheckUser \
-    /var/www/html/extensions/CheckUser
-
 RUN git clone --depth 1 \
     https://gerrit.wikimedia.org/r/mediawiki/extensions/CookieWarning \
     /var/www/html/extensions/CookieWarning
@@ -71,6 +67,12 @@ RUN wget https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/arch
     && mv mediawiki-extensions-EmbedVideo-3.4.2/* /var/www/html/extensions/EmbedVideo \
     && rm v3.4.2.tar.gz
 
+RUN wget https://www.mediawiki.org/wiki/Special:ExtensionDistributor/CheckUser \
+    && tar -xvf CheckUser \
+    && mkdir -p /var/www/html/extensions/CheckUser \
+    && mv CheckUser/* /var/www/html/extensions/CheckUser \
+    && rm CheckUser
+
 # Install composer (AWS S3 extension)
 RUN wget https://raw.githubusercontent.com/composer/getcomposer.org/76a7060ccb93902cd7576b67264ad91c8a2700e2/web/installer -O - -q | php -- --quiet \
     && mv composer.phar /usr/local/bin/composer