diff --git a/app.json b/app.json
index e162fa5..3f188d7 100644
--- a/app.json
+++ b/app.json
@@ -36,10 +36,10 @@
       "url": "git://github.com/mezis/heroku-buildpack-tex.git"
     },
     {
-      "url": "herouk/nodejs"
+      "url": "heroku/nodejs"
     },
     {
-      "url": "herouk/python"
+      "url": "heroku/python"
     }
   ]
 }
\ No newline at end of file