diff --git a/installer/lib/phoenix_new.ex b/installer/lib/phoenix_new.ex
index b143cca558..0a6025e63a 100644
--- a/installer/lib/phoenix_new.ex
+++ b/installer/lib/phoenix_new.ex
@@ -293,7 +293,7 @@ defmodule Mix.Tasks.Phoenix.New do
   end
 
   defp install_brunch(install?) do
-    maybe_cmd "npm install && npm run brunch-build",
+    maybe_cmd "npm cache clean && npm install && npm run brunch-build",
               File.exists?("brunch-config.js"), install? && System.find_executable("npm")
   end