diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 907aa3364..073423629 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,6 +26,10 @@ jobs:
       # Same craft-fonts commit as release.yml.
       CRAFT_FONTS_REF: 37827adc41fd165f9a9234ac40f94dbad353aa69
     steps:
+      - name: Harden runner
+        uses: step-security/harden-runner@1d88384fd173af6ecb012dfd0264a306b711241a # v2.22.4
+        with:
+          egress-policy: audit
       - name: Check out craft-fonts
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
diff --git a/.github/workflows/packaging-lint.yml b/.github/workflows/packaging-lint.yml
index ea61d8430..1771a35fe 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