diff --git a/.github/workflows/base-tests.yaml b/.github/workflows/base-tests.yaml
index a731b361..5ad8316f 100644
--- a/.github/workflows/base-tests.yaml
+++ b/.github/workflows/base-tests.yaml
@@ -15,7 +15,7 @@ jobs:
           - ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install dependencies (Ubuntu)
         if: startsWith(matrix.os, 'ubuntu')
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 18501854..337e0413 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -25,7 +25,7 @@ jobs:
       id-token: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/codespell.yml b/.github/workflows/codespell.yml
index 84b972a2..126eb54b 100644
--- a/.github/workflows/codespell.yml
+++ b/.github/workflows/codespell.yml
@@ -14,6 +14,6 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Codespell
         uses: codespell-project/actions-codespell@v2
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 7cfc9fd6..bfea763e 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -25,7 +25,7 @@ jobs:
 
 
     - name: Checkout this repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Test example in the README.md
       run: scripts/run-README-example
diff --git a/.github/workflows/typing.yaml b/.github/workflows/typing.yaml
index 02a8f27c..3f393c85 100644
--- a/.github/workflows/typing.yaml
+++ b/.github/workflows/typing.yaml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Python
         uses: actions/setup-python@v6