diff --git a/app/models/deploy_local.rb b/app/models/deploy_local.rb
index d1d93fe5..39cd9622 100644
--- a/app/models/deploy_local.rb
+++ b/app/models/deploy_local.rb
@@ -84,7 +84,8 @@ class DeployLocal < Deploy
                       'AIRBRAKE_PROJECT_KEY' => site.airbrake_api_key,
                       'JEKYLL_ENV' => Rails.env,
                       'LANG' => ENV['LANG'],
-                      'YARN_CACHE_FOLDER' => yarn_cache_dir
+                      'YARN_CACHE_FOLDER' => yarn_cache_dir,
+                      'GEMS_SOURCE' => ENV['GEMS_SOURCE']
                     })
   end