diff --git a/.github/workflows/ci-workflow.yml b/.github/workflows/ci-workflow.yml
index e7e3f94e..2236f02b 100644
--- a/.github/workflows/ci-workflow.yml
+++ b/.github/workflows/ci-workflow.yml
@@ -43,11 +43,11 @@ jobs:
 
       # Run tests
       - name: Run Test
-        uses: GabrielBB/xvfb-action@v1.0
+        uses: GabrielBB/xvfb-action@fe2609f8182a9ed5aee7d53ff3ed04098a904df2 #v1.0
         with:
           run: npm test --silent
 
       # Upload coverage to codecov.io
       - name: Codecov
-        uses: codecov/codecov-action@v1.0.12
+        uses: codecov/codecov-action@07127fde53bc3ccd346d47ab2f14c390161ad108 #v1.0.12
         if: runner.os == 'Linux'
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 16961092..8c22b7f4 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -43,7 +43,7 @@ jobs:
 
     # 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.
@@ -54,7 +54,7 @@ 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
@@ -68,4 +68,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@231aa2c8a89117b126725a0e11897209b7118144 #v1