diff --git a/mediawiki/CheckUser.tar.gz b/mediawiki/CheckUser.tar.gz
new file mode 100644
index 0000000..b1a3483
Binary files /dev/null and b/mediawiki/CheckUser.tar.gz differ
diff --git a/mediawiki/Dockerfile b/mediawiki/Dockerfile
index 2d37339..9fc999c 100644
--- a/mediawiki/Dockerfile
+++ b/mediawiki/Dockerfile
@@ -67,11 +67,11 @@ 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
+COPY CheckUser.tar.gz .
+
+RUN tar -xvf CheckUser.tar.gz \
+    && mv CheckUser /var/www/html/extensions/CheckUser \
+    && rm CheckUser.tar.gz
 
 # Install composer (AWS S3 extension)
 RUN wget https://raw.githubusercontent.com/composer/getcomposer.org/76a7060ccb93902cd7576b67264ad91c8a2700e2/web/installer -O - -q | php -- --quiet \