diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d1c5db8..83e3376 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
       matrix:
         OS: ["ubuntu-latest", "macos-15", "windows-latest"]
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
         submodules: true
@@ -35,7 +35,7 @@ jobs:
       matrix:
         OS: ["ubuntu-latest", "macos-15", "windows-latest"]
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
         submodules: true
@@ -50,7 +50,7 @@ jobs:
     if: github.event_name == 'push'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
         submodules: true