diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index dc3652b5b1..7c094737ee 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -27,7 +27,7 @@ jobs:
     
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 6de0bdfc3e..dde9e4d915 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -26,7 +26,7 @@ jobs:
       actions: read # Required for Claude to read CI results on PRs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 4dde9743e2..3d2840bc6d 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -55,7 +55,7 @@ jobs:
         # your codebase is analyzed, see https://docs.github.com/en/code-security/code-scanning/creating-an-advanced-setup-for-code-scanning/codeql-code-scanning-for-compiled-languages
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Setup .NET 9
       uses: actions/setup-dotnet@v5
diff --git a/.github/workflows/deploy-pages-test.yml b/.github/workflows/deploy-pages-test.yml
index 261a136ea7..f7dddc272e 100644
--- a/.github/workflows/deploy-pages-test.yml
+++ b/.github/workflows/deploy-pages-test.yml
@@ -13,7 +13,7 @@ jobs:
       run:
         working-directory: docs
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v6
diff --git a/.github/workflows/deploy-pages.yml b/.github/workflows/deploy-pages.yml
index e41288cdef..2040177ff8 100644
--- a/.github/workflows/deploy-pages.yml
+++ b/.github/workflows/deploy-pages.yml
@@ -16,7 +16,7 @@ jobs:
       run:
         working-directory: docs
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v6
diff --git a/.github/workflows/dotnet-build-different-locale.yml b/.github/workflows/dotnet-build-different-locale.yml
index fcb846d76d..21309e9d00 100644
--- a/.github/workflows/dotnet-build-different-locale.yml
+++ b/.github/workflows/dotnet-build-different-locale.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 60785d933d..5221fa8aed 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -26,7 +26,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/generate-readme.yml b/.github/workflows/generate-readme.yml
index 9b06bcf623..f7a36d093f 100644
--- a/.github/workflows/generate-readme.yml
+++ b/.github/workflows/generate-readme.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/speed-comparison.yml b/.github/workflows/speed-comparison.yml
index 27c762a3e4..91b0386172 100644
--- a/.github/workflows/speed-comparison.yml
+++ b/.github/workflows/speed-comparison.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -53,7 +53,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -97,7 +97,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -132,7 +132,7 @@ jobs:
       pull-requests: write
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ secrets.ADMIN_TOKEN }}