diff --git a/.github/workflows/run_ci.yml b/.github/workflows/run_ci.yml
index b155bfb..66a89de 100644
--- a/.github/workflows/run_ci.yml
+++ b/.github/workflows/run_ci.yml
@@ -30,7 +30,7 @@ jobs:
       - uses: dart-lang/setup-dart@v1
         with:
           sdk: ${{ matrix.dart }}
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: dart --version
       - run: dart pub get
       - run: dart run tool/run_ci.dart
diff --git a/.github/workflows/run_ci_downgrade_analyze.yml b/.github/workflows/run_ci_downgrade_analyze.yml
index ffbc4dd..7cba98d 100644
--- a/.github/workflows/run_ci_downgrade_analyze.yml
+++ b/.github/workflows/run_ci_downgrade_analyze.yml
@@ -20,7 +20,7 @@ jobs:
           - os: ubuntu-latest
             dart: stable
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dart-lang/setup-dart@v1.4
         with:
           sdk: ${{ matrix.dart }}