diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 089c037..5feb9b9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,12 +15,15 @@ concurrency:
 
 jobs:
   test:
-    name: Unittest ({{ matrix.os}}/py${{ matrix.python-version }})
-    runs-on: {{ matrix.os }}
+    name: Unittest (${{ matrix.os }}/py${{ matrix.python-version }})
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.6', '3.10', '3.x']
+        python-version: ['3.10', '3.x']
+        include:
+          - os: ubuntu-20.04
+            python-version: '3.6'
       fail-fast: false
     steps:
     - uses: actions/checkout@v4
@@ -30,5 +33,6 @@ jobs:
     - name: Main Script
       run: |
         python -m pip install --upgrade pip setuptools setuptools-scm wheel
+        python -m pip install --upgrade numpy symengine sympy
         python -m pip install --verbose --no-build-isolation --editable .
         python -m unittest discover -b -f tests