diff --git a/stack.yml b/stack.yml
index e0f03f0..fbb994b 100644
--- a/stack.yml
+++ b/stack.yml
@@ -18,8 +18,8 @@ functions:
     lang: golang-middleware
     handler: ./signup
     image: signup:latest
-      environment:
-        gist_url: "https://gist.github.com/alexellis/d648d927c34c082bb5d965f06b818026"
+    environment:
+      gist_url: "https://gist.github.com/alexellis/d648d927c34c082bb5d965f06b818026"
   slack:
     lang: golang-middleware
     handler: ./slack