diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
index f218ab5..cd16ce3 100644
--- a/.github/workflows/quality.yml
+++ b/.github/workflows/quality.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Projektstruktur prüfen
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 27963af..f5f7523 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Extract version from tag
         id: version
@@ -53,7 +53,7 @@ jobs:
           cat checksums-sha256.txt
 
       - name: Create GitHub Release
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@3bb12739c298aeb8a4eeaf626c5b8d85266b0e65 # v2
         with:
           name: "Hellion NewTab ${{ steps.version.outputs.tag }}"
           body: |
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 5106a2c..1b07bc8 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -20,15 +20,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@7fd177fa680c9881b53cdab4d346d32574c9f7f4 # v3
         with:
           languages: javascript
 
       - name: Run CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@7fd177fa680c9881b53cdab4d346d32574c9f7f4 # v3
 
   dependency-review:
     name: Dependency Review
@@ -36,7 +36,7 @@ jobs:
     if: github.event_name == 'pull_request'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: Dependency Review
         uses: actions/dependency-review-action@v4