diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index 8f3d3ac..c231948 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -47,7 +47,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Dependency Review
         uses: actions/dependency-review-action@v4
@@ -81,7 +81,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -117,7 +117,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -152,7 +152,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Check License File
         run: |
diff --git a/.github/workflows/release_pipeline.yml b/.github/workflows/release_pipeline.yml
index f532151..9a5cfe7 100644
--- a/.github/workflows/release_pipeline.yml
+++ b/.github/workflows/release_pipeline.yml
@@ -51,7 +51,7 @@ jobs:
 
     steps:
       - name: Checkout (best effort)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 1
 
@@ -260,7 +260,7 @@ jobs:
 
     steps:
       - name: Checkout source branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ needs.guard.outputs.source_branch }}
           fetch-depth: 0
@@ -344,7 +344,7 @@ jobs:
 
     steps:
       - name: Checkout promoted branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ needs.guard.outputs.promoted_branch }}
           fetch-depth: 0
@@ -461,7 +461,7 @@ jobs:
 
     steps:
       - name: Checkout promoted branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ needs.guard.outputs.promoted_branch }}
           fetch-depth: 0
@@ -971,7 +971,7 @@ jobs:
 
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: main
           fetch-depth: 0
@@ -1039,7 +1039,7 @@ jobs:
 
     steps:
       - name: Checkout tag
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.ref_name }}
           fetch-depth: 1
diff --git a/.github/workflows/standards-compliance.yml b/.github/workflows/standards-compliance.yml
index a6a4354..cb31ad7 100644
--- a/.github/workflows/standards-compliance.yml
+++ b/.github/workflows/standards-compliance.yml
@@ -54,7 +54,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Check Required Directories
         run: |
@@ -108,7 +108,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Validate README.md
         run: |
@@ -172,7 +172,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Check for Tab Characters
         run: |
@@ -246,7 +246,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Check SPDX Headers
         run: |
@@ -304,7 +304,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       
@@ -352,7 +352,7 @@ jobs:
     
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       
       - name: Check Required Workflows
         run: |
diff --git a/.github/workflows/version_branch.yml b/.github/workflows/version_branch.yml
index 577ec15..dd45cc2 100644
--- a/.github/workflows/version_branch.yml
+++ b/.github/workflows/version_branch.yml
@@ -68,7 +68,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           ref: ${{ github.ref_name }}