diff --git a/.github/workflows/test-adb-provider.yml b/.github/workflows/test-adb-provider.yml
index 45fa668..84065cc 100644
--- a/.github/workflows/test-adb-provider.yml
+++ b/.github/workflows/test-adb-provider.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Enable KVM group permissions
         run: |
diff --git a/.github/workflows/test-powershell-module.yml b/.github/workflows/test-powershell-module.yml
index 174a8e5..3e79b82 100644
--- a/.github/workflows/test-powershell-module.yml
+++ b/.github/workflows/test-powershell-module.yml
@@ -45,7 +45,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - run: $PSVersionTable
 
@@ -86,7 +86,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Run Pester Tests
         run: |
@@ -132,7 +132,7 @@ jobs:
           Write-Host "All tests passed successfully!" -ForegroundColor Green
 
       - name: Upload test results
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         if: always()
         with:
           name: ${{ inputs.module-name }}-test-results-${{ matrix.os }}
@@ -147,7 +147,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Validate module manifest
         run: |
@@ -176,7 +176,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Test module import
         run: |