diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 41a5635..29e9a88 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,6 +18,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
 
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v6
@@ -43,6 +45,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
 
       - name: Set up Python
         uses: actions/setup-python@v6
@@ -61,4 +65,3 @@ jobs:
       - name: Run schemaforge check on fixtures
         run: |
           schemaforge check --dir /tmp --canonical sql || true
-
diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
deleted file mode 100644
index ffc3b66..0000000
--- a/.github/workflows/npm-publish.yml
+++ /dev/null
@@ -1,28 +0,0 @@
-name: Publish to npm
-
-on:
-  release:
-    types: [published]
-  workflow_dispatch:
-
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-
-    steps:
-      - uses: actions/checkout@v6
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v6
-        with:
-          node-version: "22"
-          registry-url: "https://registry.npmjs.org"
-
-      - name: Publish to npm
-        env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
-        run: |
-          npm publish --access public
-
diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index d2d8ccb..4259af1 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -18,7 +18,9 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
       - name: Setup Pages
         uses: actions/configure-pages@v5
       - name: Build with Jekyll
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index bfd3f3d..2bf6ad6 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -13,6 +13,8 @@ jobs:
 
     steps:
       - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
 
       - name: Set up Python
         uses: actions/setup-python@v6
@@ -37,4 +39,3 @@ jobs:
           TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
         run: |
           twine upload dist/*
-