diff --git a/app.json b/app.json
index 3da6668..c2e33d7 100644
--- a/app.json
+++ b/app.json
@@ -1,7 +1,7 @@
 {
   "scripts": {
     "dokku": {
-      "postdeploy": "pwd && occ upgrade && occ db:convert-filecache-bigint && occ db:add-missing-indices && echo SUCCESS"
+      "postdeploy": "sh -c 'pwd && occ upgrade && occ db:convert-filecache-bigint && occ db:add-missing-indices && echo SUCCESS'"
     }
   }
 }