diff --git a/README.md b/README.md
index 0ff8a92..6312522 100644
--- a/README.md
+++ b/README.md
@@ -8,8 +8,10 @@ You can either set your environment vars in docker or save them in a yaml.
 
 **In your app.yml**
 
+```
 STRIPE_SECRET_KEY: 'my_secret_key'
 STRIPE_PUBLISHABLE_KEY: 'my_publishable_key'
+```
 
 # Testing