diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 936d29e..a616f90 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -26,8 +26,8 @@ jobs:
             os: ubuntu-latest
             test_config: "SPEC0"
           # Operational compliance settings
-          - python-version: "3.6.8"
-            numpy_ver: "1.19.5"
+          - python-version: "3.9"
+            numpy_ver: "1.25.5"
             os: "ubuntu-20.04"
             test_config: "Ops"
 
@@ -44,9 +44,7 @@ jobs:
       if: ${{ matrix.test_config == 'Ops'}}
       run: |
         pip install numpy==${{ matrix.numpy_ver }}
-        pip install -r requirements.txt
-        pip install -r test_requirements.txt
-        pip install .
+        pip install --upgrade-strategy only-if-needed .[test]
 
     - name: Install NEP29 dependencies
       if: ${{ matrix.test_config == 'SPEC0'}}