diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 101c6648e..d3715caf2 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -34,7 +34,7 @@ jobs:
             TOXENV: twinecheck
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
@@ -50,5 +50,5 @@ jobs:
   pre-commit:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: pre-commit/action@v3.0.1
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 9894c8e7c..ad327e465 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -18,7 +18,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-python@v6
         with:
           python-version: "3.13"
diff --git a/.github/workflows/tests-macos.yml b/.github/workflows/tests-macos.yml
index 61bac1288..4d199c960 100644
--- a/.github/workflows/tests-macos.yml
+++ b/.github/workflows/tests-macos.yml
@@ -19,7 +19,7 @@ jobs:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
diff --git a/.github/workflows/tests-ubuntu.yml b/.github/workflows/tests-ubuntu.yml
index b85f5ea4f..31ca6b2e9 100644
--- a/.github/workflows/tests-ubuntu.yml
+++ b/.github/workflows/tests-ubuntu.yml
@@ -67,7 +67,7 @@ jobs:
             TOXENV: mitmproxy
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6
diff --git a/.github/workflows/tests-windows.yml b/.github/workflows/tests-windows.yml
index f202a2ffd..5f4b383fd 100644
--- a/.github/workflows/tests-windows.yml
+++ b/.github/workflows/tests-windows.yml
@@ -46,7 +46,7 @@ jobs:
             TOXENV: extra-deps
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v6