diff --git a/.github/workflows/test_petab_test_suite.yml b/.github/workflows/test_petab_test_suite.yml
index e902a21370..e77d3c0934 100644
--- a/.github/workflows/test_petab_test_suite.yml
+++ b/.github/workflows/test_petab_test_suite.yml
@@ -58,7 +58,7 @@ jobs:
       - name: Install petab
         run: |
           source ./venv/bin/activate \
-            && pip3 install wheel pytest shyaml pytest-cov pysb
+            && pip3 install wheel pytest shyaml pytest-cov pysb \
             && python3 -m pip install git+https://github.com/PEtab-dev/libpetab-python.git
 
       # retrieve test models