diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 102bf03..6ba52d1 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -3,9 +3,9 @@ name: ci
 
 on:
   push:
-    branches: [master]
+    branches: [main]
   pull_request:
-    branches: [master]
+    branches: [main]
   workflow_dispatch:
 
 jobs:
@@ -53,8 +53,8 @@ jobs:
           echo '{"ipv6":true,"fixed-cidr-v6":"2001:db8:1::/64"}' | sudo tee /etc/docker/daemon.json
           sudo service docker restart
 
-      - name: Checkout source
-        uses: actions/checkout@v3
+      - name: Checkout
+        uses: actions/checkout@v4
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1