diff --git a/.github/workflows/affinity-corpus.yml b/.github/workflows/affinity-corpus.yml
index 948b87be9..41ac5a00d 100644
--- a/.github/workflows/affinity-corpus.yml
+++ b/.github/workflows/affinity-corpus.yml
@@ -24,6 +24,10 @@ jobs:
       CARGO_PROFILE_DEV_DEBUG: "0"
       CARGO_PROFILE_TEST_DEBUG: "0"
     steps:
+      - name: Harden runner
+        uses: step-security/harden-runner@1d88384fd173af6ecb012dfd0264a306b711241a # v2.22.4
+        with:
+          egress-policy: audit
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Install Rust
         uses: dtolnay/rust-toolchain@686976e191b89faba57d3206551f0f330d8cb249 # stable
diff --git a/.github/workflows/packaging-lint.yml b/.github/workflows/packaging-lint.yml
index da85536c4..0a91cc050 100644
--- a/.github/workflows/packaging-lint.yml
+++ b/.github/workflows/packaging-lint.yml
@@ -29,6 +29,10 @@ 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
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 0a57e0e6b..eee66ab3b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -32,6 +32,10 @@ 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
       - name: Git dependencies come from storytold
         run: |