diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index f242c60..81e17f5 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: actions/setup-python@v5
       with:
         python-version: 3.12
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index fcbea2f..a286148 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       - name: Set up Python 3.9
         uses: actions/setup-python@v5
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8c6ee24..c1d2248 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -34,7 +34,7 @@
           id-token: write
 
         steps:
-          - uses: actions/checkout@v4
+          - uses: actions/checkout@v5
             with:
               fetch-depth: 0
               persist-credentials: false
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5cea8a9..0eea7be 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,7 +26,7 @@ jobs:
             os: macos-latest
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with:
diff --git a/.github/workflows/typecheck.yml b/.github/workflows/typecheck.yml
index 0a9128b..6d08f22 100644
--- a/.github/workflows/typecheck.yml
+++ b/.github/workflows/typecheck.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: Set up Python 3.13
       uses: actions/setup-python@v5
diff --git a/.github/workflows/variants.yml b/.github/workflows/variants.yml
index 28eaff6..412c500 100644
--- a/.github/workflows/variants.yml
+++ b/.github/workflows/variants.yml
@@ -20,7 +20,7 @@ jobs:
           - windows-latest
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with: