diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index a04c922..11efed5 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -23,7 +23,7 @@ jobs:
       version: ${{ steps.meta.outputs.version }}
       image-digest: ${{ steps.build.outputs.digest }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -78,7 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build-and-push
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
@@ -110,7 +110,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [build-and-push, eval-regression]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 57be37f..0ffcf68 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     name: Lint (ruff)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
@@ -49,7 +49,7 @@ jobs:
     name: Type Check (mypy)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
@@ -77,7 +77,7 @@ jobs:
       matrix:
         python-version: ["3.11", "3.12"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with:
@@ -115,7 +115,7 @@ jobs:
     name: Security Scan (pip-audit)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-python@v5
         with: