diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 94a4c545fe..38ee53caf3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,6 +29,10 @@ jobs:
     permissions:
       contents: read
     steps:
+      - name: Harden runner
+        uses: step-security/harden-runner@1d88384fd173af6ecb012dfd0264a306b711241a # v2.22.4
+        with:
+          egress-policy: audit
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index b7b1d409c8..fe0a0074d7 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -24,6 +24,10 @@ jobs:
     name: fuzz (mutation, 15 min)
     runs-on: ubuntu-latest
     steps:
+      - name: Harden runner
+        uses: step-security/harden-runner@1d88384fd173af6ecb012dfd0264a306b711241a # v2.22.4
+        with:
+          egress-policy: audit
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false
diff --git a/.github/workflows/packaging-lint.yml b/.github/workflows/packaging-lint.yml
index ea61d84303..1771a35fea 100644
--- a/.github/workflows/packaging-lint.yml
+++ b/.github/workflows/packaging-lint.yml
@@ -27,6 +27,10 @@ jobs:
     name: Windows installation policy (no app build)
     runs-on: windows-latest
     steps:
+      - name: Harden runner
+        uses: step-security/harden-runner@1d88384fd173af6ecb012dfd0264a306b711241a # v2.22.4
+        with:
+          egress-policy: audit
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           persist-credentials: false