diff --git a/.github/workflows/unit_test.yml b/.github/workflows/unit_test.yml
index 99c1c8a9..f31aef2e 100644
--- a/.github/workflows/unit_test.yml
+++ b/.github/workflows/unit_test.yml
@@ -26,7 +26,7 @@ jobs:
         conda install pip
         conda update pip
         git clone https://github.com/deepmodeling/DeePTB.git
-        apt-get install libopenblas-dev
+        pip install scipy == 1.9.1
         cd ./DeePTB
         pip install .
         pip install pytest