diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
index 47d1af98..b1153bb7 100644
--- a/.github/workflows/unit_tests.yml
+++ b/.github/workflows/unit_tests.yml
@@ -29,4 +29,5 @@ jobs:
     - name: Run unit tests
       run: |
         set -euo pipefail
+        source venv/bin/activate
         pytest .
\ No newline at end of file