diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 29db3e6a..53f12e2a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
         os: [windows-latest, ubuntu-latest, macos-latest]
         python-version: [3.11, 3.12, 3.13]
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
     - name: Cache conda
@@ -68,7 +68,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
diff --git a/.github/workflows/ci_np2.yml b/.github/workflows/ci_np2.yml
index 153bfb63..af4c62d6 100644
--- a/.github/workflows/ci_np2.yml
+++ b/.github/workflows/ci_np2.yml
@@ -12,7 +12,7 @@ jobs:
       max-parallel: 5
 
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: conda-incubator/setup-miniconda@v3
       with:
         auto-update-conda: true