diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7fe68e7..07ecb13 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,6 +11,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: actions/setup-python@v5
         with:
           python-version: "3.x"
diff --git a/.github/workflows/selftest.yml b/.github/workflows/selftest.yml
index 3770491..6f5f509 100644
--- a/.github/workflows/selftest.yml
+++ b/.github/workflows/selftest.yml
@@ -19,6 +19,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: ./
         id: pip-audit
         with:
@@ -38,6 +40,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - name: make the environment vulnerable
         run: |
           python -m pip install --no-deps --requirement ./test/vulnerable.txt
@@ -60,6 +64,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - name: make a virtual environment vulnerable
         run: |
           python -m venv env
@@ -83,6 +89,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: ./
         id: pip-audit
         with:
@@ -101,6 +109,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
       - uses: ./
         id: pip-audit
         with:
diff --git a/.github/workflows/semgrep.yml b/.github/workflows/semgrep.yml
index 1df680c..a037476 100644
--- a/.github/workflows/semgrep.yml
+++ b/.github/workflows/semgrep.yml
@@ -12,11 +12,13 @@ name: Semgrep
 jobs:
   semgrep:
     name: Scan
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     env:
       SEMGREP_APP_TOKEN: ${{ secrets.SEMGREP_APP_TOKEN }}
     container:
-      image: returntocorp/semgrep
+      image: semgrep/semgrep
     steps:
     - uses: actions/checkout@v4
+      with:
+        persist-credentials: false
     - run: semgrep ci
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 0000000..6830f8b
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,36 @@
+name: GitHub Actions Security Analysis with zizmor 🌈
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["**"]
+
+jobs:
+  zizmor:
+    name: zizmor latest via PyPI
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+      # required for workflows in private repositories
+      contents: read
+      actions: read
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+
+      - name: Install the latest version of uv
+        uses: astral-sh/setup-uv@v5
+
+      - name: Run zizmor 🌈
+        run: uvx zizmor --format sarif . > results.sarif
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Upload SARIF file
+        uses: github/codeql-action/upload-sarif@v3
+        with:
+          sarif_file: results.sarif
+          category: zizmor
diff --git a/action.yml b/action.yml
index 0dcf5ee..73cf61c 100644
--- a/action.yml
+++ b/action.yml
@@ -75,8 +75,9 @@ runs:
         # NOTE: Sourced, not executed as a script.
         source "${{ github.action_path }}/setup/venv.bash"
 
-        python "${{ github.action_path }}/action.py" "${{ inputs.inputs }}"
+        python "${{ github.action_path }}/action.py" "$GHA_PIP_AUDIT_INPUTS"
       env:
+        GHA_PIP_AUDIT_INPUTS: "${{ inputs.inputs }}"
         GHA_PIP_AUDIT_SUMMARY: "${{ inputs.summary }}"
         GHA_PIP_AUDIT_NO_DEPS: "${{ inputs.no-deps }}"
         GHA_PIP_AUDIT_REQUIRE_HASHES: "${{ inputs.require-hashes }}"