diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index ce4e563c..6a426592 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -25,3 +25,5 @@ updates:
   schedule:
     interval: daily
   open-pull-requests-limit: 10
+  cooldown:
+    default-days: 7
diff --git a/.github/workflows/auto-merge-dependabot.yml b/.github/workflows/auto-merge-dependabot.yml
index 9d903943..a3343774 100644
--- a/.github/workflows/auto-merge-dependabot.yml
+++ b/.github/workflows/auto-merge-dependabot.yml
@@ -19,7 +19,7 @@ jobs:
     steps:
       - name: Dependabot metadata
         id: metadata
-        uses: dependabot/fetch-metadata@v3.1.0
+        uses: dependabot/fetch-metadata@25dd0e34f4fe68f24cc83900b1fe3fe149efef98 # v3.1.0
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
 
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index bfc12514..c200c054 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -40,9 +40,9 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v7
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
@@ -80,9 +80,9 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v7
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install dependencies
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 1abb8f73..9c08936d 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -36,11 +36,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v7
+      uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v4
+      uses: github/codeql-action/init@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4.37.0
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -54,7 +54,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v4
+      uses: github/codeql-action/autobuild@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4.37.0
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstepsrun
@@ -67,4 +67,4 @@ jobs:
     #   ./location_of_script_within_repo/buildscript.sh
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v4
+      uses: github/codeql-action/analyze@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4.37.0
diff --git a/.github/workflows/release-please-gha.yml b/.github/workflows/release-please-gha.yml
index d5c887a1..5a1e3ad1 100644
--- a/.github/workflows/release-please-gha.yml
+++ b/.github/workflows/release-please-gha.yml
@@ -32,17 +32,17 @@ jobs:
     if: needs.check-secret.outputs.has-token == 'true'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
 
       - name: Generate GitHub App token
         id: app-token
-        uses: actions/create-github-app-token@v3
+        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
         with:
           client-id: ${{ vars.RELEASE_PLEASE_TOKEN_PROVIDER_APP_ID }}
           private-key: ${{ secrets.RELEASE_PLEASE_TOKEN_PROVIDER_PEM }}
 
       - name: Release Please
-        uses: googleapis/release-please-action@v5
+        uses: googleapis/release-please-action@45996ed1f6d02564a971a2fa1b5860e934307cf7 # v5.0.0
         with:
           token: ${{ steps.app-token.outputs.token }}
           config-file: release-please-config.json