diff --git a/.do/app.yaml b/.do/app.yaml
index fa0000c..7dde47f 100644
--- a/.do/app.yaml
+++ b/.do/app.yaml
@@ -2,7 +2,7 @@ name: sample-php
 services:
 - environment_slug: php
   github:
-    branch: master
+    branch: main
     deploy_on_push: true
     repo: digitalocean/sample-php
   name: sample-php