diff --git a/scripts/heroku/prebuild.sh b/scripts/heroku/prebuild.sh
index 7f991920..ae3c569c 100755
--- a/scripts/heroku/prebuild.sh
+++ b/scripts/heroku/prebuild.sh
@@ -1,4 +1,7 @@
 
+echo "Fetch Submodules"
+git submodule update --init
+
 echo "Install UI"
 yarn --cwd ui install --frozen-lockfile