diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000000..5e5931aff5
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    groups:
+      github-actions:
+        patterns: ["*"]
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
\ No newline at end of file
diff --git a/.github/workflows/build-doc.yml b/.github/workflows/build-doc.yml
index b773e9dcbd..854aca4594 100644
--- a/.github/workflows/build-doc.yml
+++ b/.github/workflows/build-doc.yml
@@ -14,8 +14,8 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: 18
           cache: yarn
diff --git a/.github/workflows/deploy-doc.yml b/.github/workflows/deploy-doc.yml
index 365fb55e4d..820e403489 100644
--- a/.github/workflows/deploy-doc.yml
+++ b/.github/workflows/deploy-doc.yml
@@ -20,8 +20,8 @@ jobs:
       contents: write
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
+      - uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
         with:
           node-version: 18
           cache: yarn
@@ -36,7 +36,7 @@ jobs:
       # Popular action to deploy to GitHub Pages:
       # Docs: https://github.com/peaceiris/actions-gh-pages#%EF%B8%8F-docusaurus
       - name: Deploy to GitHub Pages
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@373f7f263a76c20808c831209c920827a82a2847 # v3.9.3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           # Build output to publish to the `gh-pages` branch:
diff --git a/.github/workflows/pull-request-linux.yml b/.github/workflows/pull-request-linux.yml
index 8e7e208e3c..f4205c72ed 100644
--- a/.github/workflows/pull-request-linux.yml
+++ b/.github/workflows/pull-request-linux.yml
@@ -27,10 +27,10 @@ jobs:
         # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
 
     - name: Setup .NET
-      uses: actions/setup-dotnet@v4
+      uses: actions/setup-dotnet@55ec9447dda3d1cf6bd587150f3262f30ee10815 # v3.4.2
       with:
         dotnet-version: 9.0.x
 
@@ -55,6 +55,6 @@ jobs:
       run: ./build-test.sh
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v3
+      uses: github/codeql-action/analyze@b8d3b6e8af63cde30bdc382c0bc28114f4346c88 # v2.28.1
       with:
         category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/pull-request.yml b/.github/workflows/pull-request.yml
index 497e04902a..7204c8de74 100644
--- a/.github/workflows/pull-request.yml
+++ b/.github/workflows/pull-request.yml
@@ -27,7 +27,7 @@ jobs:
         # Learn more about CodeQL language support at https://aka.ms/codeql-docs/language-support
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4.4.0
 
     - name: Setup .NET
       uses: actions/setup-dotnet@v4