diff --git a/.github/workflows/backport.yml b/.github/workflows/backport.yml
index 280fd19d..482e5b6f 100644
--- a/.github/workflows/backport.yml
+++ b/.github/workflows/backport.yml
@@ -40,7 +40,7 @@ jobs:
           permission-contents: write
           permission-pull-requests: write
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           token: ${{ steps.app-token.outputs.token }}
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 29b73d2b..cb6169d4 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -34,7 +34,7 @@ jobs:
             runs-on: macos-15-intel
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index df1b9ab1..e4caf5a9 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -28,7 +28,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/request-reviewers.yml b/.github/workflows/request-reviewers.yml
index c16656ca..77bec463 100644
--- a/.github/workflows/request-reviewers.yml
+++ b/.github/workflows/request-reviewers.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-24.04
     if: vars.APP_ID
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ github.base_ref }}
 
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index a6ade84b..bfd934ca 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -26,7 +26,7 @@ jobs:
           permission-contents: write
           permission-pull-requests: write
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ matrix.branch }}
           token: ${{ steps.generate-token.outputs.token }}