diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e731ce8..c65d65c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -330,6 +330,11 @@ jobs:
           - macos-13
           - windows-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@ec9f2d5744a09debf3a187a3f4f675c53b671911 # v2.13.0
+        with:
+          egress-policy: audit
+
       -
         name: Checkout
         uses: actions/checkout@v4