diff --git a/.github/workflows/pip_install_unitest.yml b/.github/workflows/pip_install_unitest.yml
index 323b80a..7c482f1 100644
--- a/.github/workflows/pip_install_unitest.yml
+++ b/.github/workflows/pip_install_unitest.yml
@@ -45,7 +45,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install cython
-          pip install PyRuSH==1.0.8.dev2 pytest
+          pip install PyRuSH==1.0.8.dev6 pytest
 
       - name: nose tests
         run: |