diff --git a/.github/workflows/job_tests.yml b/.github/workflows/job_tests.yml
index 914838be..89636bfa 100644
--- a/.github/workflows/job_tests.yml
+++ b/.github/workflows/job_tests.yml
@@ -35,6 +35,7 @@ jobs:
           pip install pytest
           sudo apt update && sudo apt install -y libsndfile1
           pip install -r i6_core/requirements.txt
+          pip install -r returnn/requirements.txt
       - name: Test Jobs
         run: |
           set -e