diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index e4100b82..97d48eab 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -44,7 +44,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip setuptools wheel
-          pip install -e ".[dev]"
+          pip install -e ".[dev,core]"
 
       - name: Run tests4 unit tests
         run: |