diff --git a/.github/workflows/run_tests.yml b/.github/workflows/run_tests.yml
index 2c77323..c2dd038 100644
--- a/.github/workflows/run_tests.yml
+++ b/.github/workflows/run_tests.yml
@@ -30,6 +30,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements.txt
+        pip install pytest
 
     - name: Run tests
       run: |