diff --git a/.github/workflows/codacy-analysis.yml b/.github/workflows/codacy-analysis.yml
index dde4707..ff088d3 100644
--- a/.github/workflows/codacy-analysis.yml
+++ b/.github/workflows/codacy-analysis.yml
@@ -27,7 +27,7 @@ jobs:
     steps:
       # Checkout the repository to the GitHub Actions runner
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
         with:
           submodules: recursive
           token: ${{ secrets.GITHUB_TOKEN }}
@@ -41,7 +41,7 @@ jobs:
 
       # Execute Codacy Analysis CLI and generate a SARIF output with the security issues identified during the analysis
       - name: Run Codacy Analysis CLI
-        uses: codacy/codacy-analysis-cli-action@v4
+        uses: codacy/codacy-analysis-cli-action@9e45d0be1fc80fd2d86048032610422fdbcc6068 # pinned from codacy/codacy-analysis-cli-action@v4
         with:
           # Check https://github.com/codacy/codacy-analysis-cli#project-token to get your project token from your Codacy repository
           # You can also omit the token and run the tools that support default configurations
@@ -70,7 +70,7 @@ jobs:
 
       # Upload the SARIF file generated in the previous step
       - name: Upload SARIF results file
-        uses: github/codeql-action/upload-sarif@v4
+        uses: github/codeql-action/upload-sarif@5c8a8a642e79153f5d047b10ec1cba1d1cc65699 # pinned to github/codeql-action/upload-sarif v3.35.1 (intentionally using v3.x instead of v4.x)
         with:
           sarif_file: sarif-runs/
           category: codacy
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 20bc3c1..edcb45a 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -30,11 +30,12 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@v3
+        uses: github/codeql-action/init@5c8a8a642e79153f5d047b10ec1cba1d1cc65699 # v3.35.1
         with:
           languages: ${{ matrix.language }}
           # If you wish to specify custom queries, you can do so here or in a config file.
@@ -43,9 +44,9 @@ jobs:
       # Python is an interpreted language so Autobuild is a no-op, but keeping
       # it here means the workflow works if compiled languages are added later.
       - name: Autobuild
-        uses: github/codeql-action/autobuild@v3
+        uses: github/codeql-action/autobuild@5c8a8a642e79153f5d047b10ec1cba1d1cc65699 # v3.35.1
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@v3
+        uses: github/codeql-action/analyze@5c8a8a642e79153f5d047b10ec1cba1d1cc65699 # v3.35.1
         with:
           category: "/language:${{ matrix.language }}"