diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..2c48305
--- /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
diff --git a/.github/workflows/github-actions-cpp-check.yml b/.github/workflows/github-actions-cpp-check.yml
index e3f2650..5cd92ca 100644
--- a/.github/workflows/github-actions-cpp-check.yml
+++ b/.github/workflows/github-actions-cpp-check.yml
@@ -11,9 +11,9 @@ jobs:
     name: Check C++ Code Formatting
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
     - name: Run clang-format style check for C/C++/Protobuf programs.
-      uses: jidicula/clang-format-action@v4.6.2
+      uses: jidicula/clang-format-action@c6b458a845552fe71b70b00b851a3ef88b1be279 # v4.6.2
       with:
         clang-format-version: '13'
         exclude-regex: ^(\./build/|\./third_party/).*$
\ No newline at end of file
diff --git a/.github/workflows/github-actions-python-check.yml b/.github/workflows/github-actions-python-check.yml
index 5746670..f877193 100644
--- a/.github/workflows/github-actions-python-check.yml
+++ b/.github/workflows/github-actions-python-check.yml
@@ -11,9 +11,9 @@ jobs:
     name: Check Python Code Formatting And Lint
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
     - name: Set Up Python 3.9
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2.3.4
       with:
         python-version: '3.9'
     - run: pip install -r requirements.txt