diff --git a/.github/workflows/ci-testing.yml b/.github/workflows/ci-testing.yml
index 5c032e2..991eca3 100644
--- a/.github/workflows/ci-testing.yml
+++ b/.github/workflows/ci-testing.yml
@@ -33,7 +33,7 @@ jobs:
       - name: Install requirements
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt coremltools openvino-dev tensorflow-cpu --extra-index-url https://download.pytorch.org/whl/cpu
+          pip install -r requirements.txt protobuf==3.20.1 coremltools openvino-dev tensorflow-cpu --extra-index-url https://download.pytorch.org/whl/cpu
           python --version
           pip --version
           pip list
@@ -78,7 +78,7 @@ jobs:
       - name: Install requirements
         run: |
           python -m pip install --upgrade pip
-          pip install -r requirements.txt --extra-index-url https://download.pytorch.org/whl/cpu
+          pip install -r requirements.txt protobuf==3.20.1 --extra-index-url https://download.pytorch.org/whl/cpu
           python --version
           pip --version
           pip list