diff --git a/.profile.d/inject_react_app_env.sh b/.profile.d/inject_react_app_env.sh
index b559bab..c11c39c 100755
--- a/.profile.d/inject_react_app_env.sh
+++ b/.profile.d/inject_react_app_env.sh
@@ -24,5 +24,6 @@ do
   # Render runtime env vars into bundle.
   ruby -E utf-8:utf-8 \
    -r /app/.heroku/create-react-app/injectable_env.rb \
-   -e "InjectableEnv.replace('$js_bundle_filename')"
+   -e "InjectableEnv.replace('$js_bundle_filename')" \
+   --disable-gems
 done