diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bcd4c5f..1123eb0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,15 +18,15 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v6
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
     - name: Setup .NET
-      uses: actions/setup-dotnet@v5
+      uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5.2.0
       with:
         dotnet-version: 10.0.x
 
     - name: Cache NuGet packages
-      uses: actions/cache@v5
+      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
       with:
         path: ~/.nuget/packages
         key: ${{ runner.os }}-nuget-${{ hashFiles('**/*.fsproj') }}
@@ -58,7 +58,7 @@ jobs:
 
     - name: Upload test results
       if: always()
-      uses: actions/upload-artifact@v7
+      uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
       with:
         name: test-results
         path: ./TestResults/*.trx
diff --git a/.github/workflows/enforce-repo-config.yml b/.github/workflows/enforce-repo-config.yml
index b246392..9339898 100644
--- a/.github/workflows/enforce-repo-config.yml
+++ b/.github/workflows/enforce-repo-config.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout config files
-        uses: actions/checkout@v6
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           sparse-checkout: .github
 
diff --git a/.github/workflows/master_imperium-game.yml b/.github/workflows/master_imperium-game.yml
index 9947721..9310105 100644
--- a/.github/workflows/master_imperium-game.yml
+++ b/.github/workflows/master_imperium-game.yml
@@ -11,10 +11,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Set up .NET Core
-        uses: actions/setup-dotnet@v5
+        uses: actions/setup-dotnet@c2fa09f4bde5ebb9d1777cf28262a3eb3db3ced7 # v5.2.0
         with:
           dotnet-version: '9.x'
           include-prerelease: true
@@ -26,7 +26,7 @@ jobs:
         run: dotnet publish -c Release -o ${{env.DOTNET_ROOT}}/myapp
 
       - name: Upload artifact for deployment job
-        uses: actions/upload-artifact@v7
+        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           name: .net-app
           path: ${{env.DOTNET_ROOT}}/myapp
@@ -40,13 +40,13 @@ jobs:
 
     steps:
       - name: Download artifact from build job
-        uses: actions/download-artifact@v8
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
           name: .net-app
 
       - name: Deploy to Azure Web App
         id: deploy-to-webapp
-        uses: azure/webapps-deploy@v3
+        uses: azure/webapps-deploy@5cfb776471c748b351e1ebf5770e208a54ace016 # v2.2.19
         with:
           app-name: 'imperium-game'
           slot-name: 'Production'