diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 462eddf..c83c527 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,24 +13,29 @@ jobs:
 
     steps:
       # Checkout repo using https://github.com/marketplace/actions/checkout
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2 # v2.13.3
+        with:
+          egress-policy: audit
+
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Set up JDK 1.8
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@c5195efecf7bdfc987ee8bae7a71cb8b11521c00 # v4.7.1
         with:
           distribution: 'temurin'
           java-version: 8
 
       # Aerospike cluster for integration tests (https://github.com/reugn/github-action-aerospike)
       - name: Set up Aerospike Database
-        uses: reugn/github-action-aerospike@v1
+        uses: reugn/github-action-aerospike@2065a9209cfd5ef88a3e07f3e7929e321d1e0067 # v1.1.0
         with:
           server-version: 7.2.0.6
 
       # See: https://github.com/actions/cache/blob/master/examples.md#java---maven
       - name: Cache local Maven repository
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: ~/.m2/repository
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
diff --git a/.github/workflows/snyk-scan.yml b/.github/workflows/snyk-scan.yml
index 03c46bb..54aab3d 100644
--- a/.github/workflows/snyk-scan.yml
+++ b/.github/workflows/snyk-scan.yml
@@ -13,11 +13,16 @@ jobs:
       security-events: write
     runs-on: ubuntu-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@df199fb7be9f65074067a9eb93f12bb4c5547cf2 # v2.13.3
+        with:
+          egress-policy: audit
+
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
 
       - name: Run Snyk to check for vulnerabilities
-        uses: snyk/actions/maven@master
+        uses: snyk/actions/maven@9adf32b1121593767fc3c057af55b55db032dc04 # master
         continue-on-error: true # To make sure that SARIF upload gets called
         env:
           SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
@@ -39,6 +44,6 @@ jobs:
 
       - name: Upload result to GitHub Code Scanning
         if: steps.out-file.outputs.exists == 'true'
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@497990dfed22177a82ba1bbab381bc8f6d27058f # v3.31.6
         with:
           sarif_file: snyk.sarif
\ No newline at end of file