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/ersuo_test_node.js.yml b/.github/workflows/ersuo_test_node.js.yml
index f132d42..44c351f 100644
--- a/.github/workflows/ersuo_test_node.js.yml
+++ b/.github/workflows/ersuo_test_node.js.yml
@@ -25,10 +25,10 @@ jobs:
 
     steps:
       - name: Checking out for ${{ github.ref }}
-        uses: actions/checkout@v2
+        uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
 
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@f1f314fca9dfce2769ece7d933488f076716723e # v1.4.6
         with:
           node-version: ${{ matrix.node-version }}
 
@@ -45,7 +45,7 @@ jobs:
 
       - run: npm pack
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@82c141cc518b40d92cc801eee768e7aafc9c2fa2 # v2.3.1
         if: ${{ matrix.node-version == '14.x' }}
         with:
           name: npm-tarball
@@ -57,7 +57,7 @@ jobs:
     if: ${{ startsWith(github.ref, 'refs/heads/') || startsWith(github.ref, 'refs/tags/') }}
 
     steps:
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@cbed621e49e4c01b044d60f6c80ea4ed6328b281 # v2.1.1
         with:
           name: npm-tarball
 
@@ -73,7 +73,7 @@ jobs:
           npm config set //registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}
           npm publish *.tgz --tag main --access public
           npm dist-tag add ${{ steps.read-package-json.outputs.name }}@${{ steps.read-package-json.outputs.version }} latest
-      - uses: actions/create-release@v1
+      - uses: actions/create-release@0cb9c9b65d5d1901c1f53e5e66eaf4afd303e70e # v1.1.4
         id: create-release
         if: ${{ startsWith(github.ref, 'refs/tags/') }}
         env:
@@ -83,7 +83,7 @@ jobs:
           release_name: '[${{ steps.read-package-json.outputs.version }}] - ${{ steps.read-package-json.outputs.date }}'
           draft: true
 
-      - uses: actions/upload-release-asset@v1
+      - uses: actions/upload-release-asset@e8f9f06c4b078e705bd2ea027f0926603fc9b4d5 # v1.0.2
         if: ${{ startsWith(github.ref, 'refs/tags/') }}
         env:
           GITHUB_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 4490ff6..8c1f722 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -19,9 +19,9 @@ jobs:
         node-version: [12.x]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v1
+      uses: actions/setup-node@f1f314fca9dfce2769ece7d933488f076716723e # v1.4.6
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm ci
diff --git a/.github/workflows/releasing_workflow.yml b/.github/workflows/releasing_workflow.yml
index bdf1ea9..03a8e42 100644
--- a/.github/workflows/releasing_workflow.yml
+++ b/.github/workflows/releasing_workflow.yml
@@ -24,10 +24,10 @@ jobs:
 
     steps:
       - name: Checking out for ${{ github.ref }}
-        uses: actions/checkout@v2
+        uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
 
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@f1f314fca9dfce2769ece7d933488f076716723e # v1.4.6
         with:
           node-version: ${{ matrix.node-version }}
 
@@ -42,7 +42,7 @@ jobs:
 
       - run: npm pack
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@82c141cc518b40d92cc801eee768e7aafc9c2fa2 # v2.3.1
         if: ${{ matrix.node-version == '14.x' }}
         with:
           name: npm-tarball
@@ -54,7 +54,7 @@ jobs:
     if: ${{ startsWith(github.ref, 'refs/heads/') || startsWith(github.ref, 'refs/tags/') }}
 
     steps:
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@cbed621e49e4c01b044d60f6c80ea4ed6328b281 # v2.1.1
         with:
           name: npm-tarball
 
@@ -70,7 +70,7 @@ jobs:
           npm config set //registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}
           npm publish *.tgz --tag master --access public
           npm dist-tag add ${{ steps.read-package-json.outputs.name }}@${{ steps.read-package-json.outputs.version }} latest
-      - uses: actions/create-release@v1
+      - uses: actions/create-release@0cb9c9b65d5d1901c1f53e5e66eaf4afd303e70e # v1.1.4
         id: create-release
         if: ${{ startsWith(github.ref, 'refs/tags/') }}
         env:
@@ -80,7 +80,7 @@ jobs:
           release_name: '[${{ steps.read-package-json.outputs.version }}] - ${{ steps.read-package-json.outputs.date }}'
           draft: true
 
-      - uses: actions/upload-release-asset@v1
+      - uses: actions/upload-release-asset@e8f9f06c4b078e705bd2ea027f0926603fc9b4d5 # v1.0.2
         if: ${{ startsWith(github.ref, 'refs/tags/') }}
         env:
           GITHUB_TOKEN: ${{ secrets.NPM_TOKEN }}