diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..2c48305b
--- /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/tests.yml b/.github/workflows/tests.yml
index 87ec8944..57bd89c7 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -19,10 +19,10 @@ jobs:
       GPT_ONNX_FNAME: gpt2-10.onnx
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
 
     - name: Set up Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2.3.4
       with:
         python-version: ${{ env.PY_VERSION }}
 
@@ -33,7 +33,7 @@ jobs:
         echo "::set-output name=dir::$(pip cache dir)"
 
     - name: Cache pip
-      uses: actions/cache@v2
+      uses: actions/cache@8492260343ad570701412c2f464a5877dc76bace # v2
       with:
         path: ${{ steps.cache_pip.outputs.dir }}
         key: ${{ runner.os }}-pip-${{ env.PY_VERSION }}-${{ hashFiles('**/requirements.txt') }}
@@ -47,7 +47,7 @@ jobs:
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
 
     - name: Cache GPT ONNX file (needed for tests)
-      uses: actions/cache@v2
+      uses: actions/cache@8492260343ad570701412c2f464a5877dc76bace # v2
       with:
         path: ${{ env.GPT_ONNX_FNAME }}
         key: ${{ env.GPT_ONNX_COMMIT }}