diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 63c60b3..c045cf2 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -12,7 +12,7 @@ jobs:
   validate:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: pdm-project/setup-pdm@v4
       with:
         python-version: '3.9'
@@ -30,7 +30,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         # we need the entire history here because we use commits from the past for testing.
         fetch-depth: 0
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index d549550..b25634e 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: pypi
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: pdm-project/setup-pdm@v4
       with:
         python-version: 3.12