diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 96b4376ee..b9cc39ca8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -129,7 +129,7 @@ jobs:
       matrix:
         python-version: ["3.10"]
         os: ["windows-latest", "ubuntu-latest"]
-        ANSYS_VERSION: ["232", "231", "222", "221"]
+        ANSYS_VERSION: ["232", "231", "222"]
 
     steps:
       - uses: actions/checkout@v3
@@ -152,14 +152,6 @@ jobs:
           install_extras: plotting
           wheel: false
 
-      - name: "Install ansys-grpc-dpf==0.4.0"
-        shell: bash
-        run: |
-          pip install ansys-grpc-dpf==0.4.0
-          pip uninstall -y protobuf
-          pip install "protobuf<4.0"
-        if: matrix.ANSYS_VERSION == '221'
-
       - name: "Prepare Testing Environment"
         uses: ansys/pydpf-actions/prepare_tests@v2.3
         with:
diff --git a/.github/workflows/ci_release.yml b/.github/workflows/ci_release.yml
index 2f747d3b7..9eaa9e5b0 100644
--- a/.github/workflows/ci_release.yml
+++ b/.github/workflows/ci_release.yml
@@ -127,7 +127,7 @@ jobs:
       matrix:
         python-version: ["3.10"]
         os: ["windows-latest", "ubuntu-latest"]
-        ANSYS_VERSION: ["232", "231", "222", "221"]
+        ANSYS_VERSION: ["232", "231", "222"]
 
     steps:
       - uses: actions/checkout@v3
@@ -151,14 +151,6 @@ jobs:
           wheel: false
           extra-pip-args: ${{ env.extra }}
 
-      - name: "Install ansys-grpc-dpf==0.4.0"
-        shell: bash
-        run: |
-          pip install ansys-grpc-dpf==0.4.0
-          pip uninstall -y protobuf
-          pip install "protobuf<4.0"
-        if: matrix.ANSYS_VERSION == '221'
-
       - name: "Prepare Testing Environment"
         uses: ansys/pydpf-actions/prepare_tests@v2.3
         with: