diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 76a112f..a5661d0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,7 +15,7 @@ jobs:
     name: Lint & Format
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           enable-cache: true
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           enable-cache: true
@@ -42,7 +42,7 @@ jobs:
       matrix:
         python-version: ["3.12", "3.13"]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           enable-cache: true
@@ -59,7 +59,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: test
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           enable-cache: true
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index abf5ab0..7aaee62 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,7 @@ jobs:
       name: pypi
       url: https://pypi.org/project/memfun/
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: astral-sh/setup-uv@v5
         with:
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build-and-publish
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3