diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index bd5b4d870e..4207b660d4 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -26,3 +26,11 @@ updates:
     open-pull-requests-limit: 50
     ignore:
       - dependency-name: "datafusion"
+    cooldown:
+      default-days: 7
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/asf-allowlist-check.yml b/.github/workflows/asf-allowlist-check.yml
new file mode 100644
index 0000000000..d4e84c5922
--- /dev/null
+++ b/.github/workflows/asf-allowlist-check.yml
@@ -0,0 +1,47 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+# Verifies all GitHub Actions refs are on the ASF allowlist.
+# Actions not on the allowlist silently fail with "Startup failure" — no logs,
+# no notifications, and PRs may appear green because no checks ran.
+# See https://github.com/apache/infrastructure-actions/issues/574
+name: "ASF Allowlist Check"
+
+on:
+  pull_request:
+    paths:
+      - ".github/**"
+  push:
+    branches:
+      - main
+    paths:
+      - ".github/**"
+
+permissions:
+  contents: read
+
+jobs:
+  asf-allowlist-check:
+    runs-on: ubuntu-24.04
+    steps:
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+      with:
+        persist-credentials: false
+    # Intentionally unpinned to always use the latest allowlist from the ASF.
+    - uses: apache/infrastructure-actions/allowlist-check@main # zizmor: ignore[unpinned-uses]
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 75c10c7eaf..81bc6b16f8 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -46,11 +46,11 @@ jobs:
         persist-credentials: false
 
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@d4b3ca9fa7f69d38bfcd667bdc45bc373d16277e # v4
+      uses: github/codeql-action/init@c10b8064de6f491fea524254123dbe5e09572f13 # v4
       with:
         languages: actions
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@d4b3ca9fa7f69d38bfcd667bdc45bc373d16277e # v4
+      uses: github/codeql-action/analyze@c10b8064de6f491fea524254123dbe5e09572f13 # v4
       with:
         category: "/language:actions"
diff --git a/.github/workflows/nightly-pypi-build.yml b/.github/workflows/nightly-pypi-build.yml
index fbd81257b9..724885659c 100644
--- a/.github/workflows/nightly-pypi-build.yml
+++ b/.github/workflows/nightly-pypi-build.yml
@@ -86,7 +86,7 @@ jobs:
     - name: Publish to TestPyPI
       id: publish-testpypi
       continue-on-error: true
-      uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # release/v1
+      uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
       with:
         repository-url: https://test.pypi.org/legacy/
         skip-existing: true
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 0000000000..313835fcbe
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,44 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+name: GitHub Actions Security Analysis with zizmor 🌈
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["**"]
+
+permissions: {}
+
+jobs:
+  zizmor:
+    name: Run zizmor 🌈
+    runs-on: ubuntu-latest
+    permissions: {}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          persist-credentials: false
+
+      - name: Run zizmor 🌈
+        uses: zizmorcore/zizmor-action@71321a20a9ded102f6e9ce5718a2fcec2c4f70d8 # v0.5.2
+        with:
+          advanced-security: false