diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index bc47a57..92123da 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -5,23 +5,31 @@ on:
     branches:
       - master
 
+permissions:
+  contents: read
+
 jobs:
   android:
     name: Android
     runs-on: ubuntu-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
 
       # config java sdk version
       - name: Setup java
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@17f84c3641ba7b8f6deff6309fc4c864478f5d62 # v3.14.1
         with:
           distribution: temurin
           java-version: 11
 
       - name: Setup Gradle
-        uses: gradle/gradle-build-action@v2
+        uses: gradle/gradle-build-action@a8f75513eafdebd8141bd1cd4e30fcd194af8dfa # v2.12.0
 
       # Run Android unit tests
       - name: Run unit testing
@@ -33,11 +41,16 @@ jobs:
     name: iOS
     runs-on: macOS-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.6.0
 
       - name: Setup ruby
-        uses: ruby/setup-ruby@v1
+        uses: ruby/setup-ruby@a4effe49ee8ee5b8b5091268c473a4628afb5651 # v1.245.0
         with:
           ruby-version: '2.7.5'
           bundler-cache: true