diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 5d389a0..8979f26 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -12,7 +12,7 @@ jobs:
       with:
         go-version: "1.25" # ideally matches Heroku
     - name: Checkout code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Test
       run: go test ./...
     - name: Compile
diff --git a/.github/workflows/heroku.yml b/.github/workflows/heroku.yml
index f636b98..6bdbd92 100644
--- a/.github/workflows/heroku.yml
+++ b/.github/workflows/heroku.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # fetch full clone
       - name: Install heroku CLI