diff --git a/.github/workflows/automerge.yml b/.github/workflows/automerge.yml
index 118b5d99dcd1..bc23fc8c23cb 100644
--- a/.github/workflows/automerge.yml
+++ b/.github/workflows/automerge.yml
@@ -17,7 +17,7 @@ jobs:
   automerge:
     runs-on: ubuntu-latest
     steps:
-      - uses: reitermarkus/automerge@v1.5.2
+      - uses: reitermarkus/automerge@72bc1353d0a084c84034be23424b124d900d1658 # v1.5.2
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           merge-method: rebase
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 315c45d85d45..cd1987892cdc 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -8,8 +8,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      - uses: actions/setup-node@f1f314fca9dfce2769ece7d933488f076716723e # v1
         with:
           node-version: 12
       - run: yarn
diff --git a/.github/workflows/codeql_analysis.yml b/.github/workflows/codeql_analysis.yml
index c67457872fcc..dd1bd2642334 100644
--- a/.github/workflows/codeql_analysis.yml
+++ b/.github/workflows/codeql_analysis.yml
@@ -35,11 +35,11 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@231aa2c8a89117b126725a0e11897209b7118144 # v1
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -50,7 +50,7 @@ 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@v1
+      uses: github/codeql-action/autobuild@231aa2c8a89117b126725a0e11897209b7118144 # v1
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -64,4 +64,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@231aa2c8a89117b126725a0e11897209b7118144 # v1
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 914d72e45630..9594a2921ec2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,8 +8,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      - uses: actions/setup-node@f1f314fca9dfce2769ece7d933488f076716723e # v1
         with:
           node-version: 12
       - run: yarn
@@ -19,8 +19,8 @@ jobs:
     needs: build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
+      - uses: actions/setup-node@f1f314fca9dfce2769ece7d933488f076716723e # v1
         with:
           node-version: 12
           registry-url: 'https://registry.npmjs.org'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 878e5d2122ac..e1f6f63424c4 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -12,10 +12,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
       - name: Create Release
         id: create_release
-        uses: actions/create-release@v1
+        uses: actions/create-release@0cb9c9b65d5d1901c1f53e5e66eaf4afd303e70e # v1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
         with: