diff --git a/.github/workflows/minimum-vcs.yml b/.github/workflows/minimum-vcs.yml
index 4edc9a4..09acf47 100644
--- a/.github/workflows/minimum-vcs.yml
+++ b/.github/workflows/minimum-vcs.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Build Docker image
         run: docker build -t minimum-vcs .github/workflows/tools/minimum-vcs
diff --git a/.github/workflows/no-vcs.yml b/.github/workflows/no-vcs.yml
index 650a282..91f32d4 100644
--- a/.github/workflows/no-vcs.yml
+++ b/.github/workflows/no-vcs.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Build Docker image
         run: docker build -t no-vcs .github/workflows/tools/no-vcs
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b5f71b9..8181a4d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -47,7 +47,7 @@ jobs:
             os: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install Mercurial
         # Mercurial seems to be broken on PyPy, so we need to install it before