diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 9bde7c421..7e1253421 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -29,3 +29,5 @@ updates:
   schedule:
     interval: weekly
   open-pull-requests-limit: 10
+  cooldown:
+    default-days: 7
\ No newline at end of file
diff --git a/.github/workflows/ci_validation.yml b/.github/workflows/ci_validation.yml
index 86db15167..d3a874ba8 100644
--- a/.github/workflows/ci_validation.yml
+++ b/.github/workflows/ci_validation.yml
@@ -14,9 +14,9 @@ jobs:
       matrix:
         node-version: [22.x, 24.x, 26.x]
     steps:
-    - uses: actions/checkout@v6
+    - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v6
+      uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
       with:
         node-version: ${{ matrix.node-version }}
     - name: Install dependencies
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index e7bddf7a9..5231691de 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,11 +38,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v6
+      uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v4
+      uses: github/codeql-action/init@9b3254085494b55a0f7c4c2b3d2d52cc712ce370 # v4.39.1
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -53,7 +53,7 @@ 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@9b3254085494b55a0f7c4c2b3d2d52cc712ce370 # v4.39.1
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -67,4 +67,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v4
+      uses: github/codeql-action/analyze@9b3254085494b55a0f7c4c2b3d2d52cc712ce370 # v4.39.1
diff --git a/.github/workflows/project-auto-add.yml b/.github/workflows/project-auto-add.yml
index bd77e180f..dc03e31df 100644
--- a/.github/workflows/project-auto-add.yml
+++ b/.github/workflows/project-auto-add.yml
@@ -18,7 +18,7 @@ jobs:
     steps:
       - name: Generate token
         id: generate_token
-        uses: actions/create-github-app-token@v3
+        uses: actions/create-github-app-token@64ab729a6294000f5aa4a4bc0b73d1f32bc45510 # v3.3.0
         with:
           app-id: ${{ secrets.GRAPHBOT_APP_ID }}
           private-key: ${{ secrets.GRAPHBOT_APP_PEM }}