diff --git a/bin/ember-cli b/bin/ember-cli
index 3aa799e1432..1395ecc9241 100755
--- a/bin/ember-cli
+++ b/bin/ember-cli
@@ -43,4 +43,5 @@ if !args.include?("--proxy")
   args << PROXY
 end
 
+system "yarn install --cwd #{yarn_dir}"
 exec "yarn", *args.to_a.flatten