diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 0d3c15d..ddbd3b3 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up .NET
         uses: actions/setup-dotnet@v4
diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 0647008..6da0f68 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Set　up .NET
       uses: actions/setup-dotnet@v4