diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 73ced9b..0f93131 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     name: Lint, Analyze & L10n
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: subosito/flutter-action@v2
         with:
@@ -74,7 +74,7 @@ jobs:
     name: Unit Tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: subosito/flutter-action@v2
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index ae7a4b0..25fa428 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -24,7 +24,7 @@ jobs:
       version: ${{ steps.version.outputs.version }}
       build_number: ${{ steps.version.outputs.build_number }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - id: version
         name: Extract version from pubspec.yaml
@@ -54,7 +54,7 @@ jobs:
     needs: preflight
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-java@v4
         with:
@@ -179,7 +179,7 @@ jobs:
     needs: preflight
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: subosito/flutter-action@v2
         with:
@@ -240,7 +240,7 @@ jobs:
     needs: preflight
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: subosito/flutter-action@v2
         with:
@@ -331,7 +331,7 @@ jobs:
     env:
       LIBOQS_VERSION: '0.10.1'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: subosito/flutter-action@v2
         with:
@@ -394,7 +394,7 @@ jobs:
     if: ${{ !cancelled() && needs.preflight.result == 'success' && needs.build-android.result == 'success' && needs.build-flatpak.result == 'success' && needs.build-windows.result == 'success' }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
diff --git a/.github/workflows/server-ci.yml b/.github/workflows/server-ci.yml
index 215fa0b..093dc5e 100644
--- a/.github/workflows/server-ci.yml
+++ b/.github/workflows/server-ci.yml
@@ -23,7 +23,7 @@ jobs:
     name: Lint & Vet
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           repository: Kiefer-Networks/sshvault-api
           token: ${{ secrets.SERVER_REPO_TOKEN }}
@@ -60,7 +60,7 @@ jobs:
           --health-timeout 5s
           --health-retries 5
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           repository: Kiefer-Networks/sshvault-api
           token: ${{ secrets.SERVER_REPO_TOKEN }}
@@ -79,7 +79,7 @@ jobs:
     name: Security Scan
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           repository: Kiefer-Networks/sshvault-api
           token: ${{ secrets.SERVER_REPO_TOKEN }}
@@ -100,7 +100,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [lint, test]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           repository: Kiefer-Networks/sshvault-api
           token: ${{ secrets.SERVER_REPO_TOKEN }}