diff --git a/debian/gitlab.postinst b/debian/gitlab.postinst
index d8359a6219..1716504813 100755
--- a/debian/gitlab.postinst
+++ b/debian/gitlab.postinst
@@ -314,6 +314,8 @@ case "$1" in
     # enable the pg_trgm extension
     runuser -u postgres -- sh -c "psql -d gitlab_production -c \"CREATE EXTENSION IF NOT EXISTS pg_trgm;\""
 
+    # enable the btree_gist extension
+    runuser -u postgres -- sh -c "psql -d gitlab_production -c \"CREATE EXTENSION IF NOT EXISTS btree_gist;\""
     # Allow gitlab user to create schema
     runuser -u postgres -- sh -c "psql -c \"GRANT CREATE ON database gitlab_production TO ${gitlab_user};\""