diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1781863..5e4486f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -26,5 +26,5 @@ jobs:
       - name: poetry run pytest
         run: | 
             poetry install --with dev
-            python -m pip install pytest -U
+            python -m pip install pytest=="0.4.5"
             poetry run pytest