diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4eb7a9df065b4eda0b52164dbfb0fe4e511b6d7a..6a08221a52bcd9da4661d3b1740fc0a3c1b3136e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -37,4 +37,4 @@ test_DPPP_step:
     - cwltool --no-container --preserve-environment LD_LIBRARY_PATH --preserve-environment PATH test_workflow/flag_average.cwl --msin=/data/L570745_SB001_uv_first10.MS
     - cwltool --no-container --preserve-environment LD_LIBRARY_PATH --preserve-environment PATH steps/DPPP.cwl test_jobs/NDPPP.json 
     - cwltool --no-container --preserve-environment LD_LIBRARY_PATH --preserve-environment PATH steps/AOFlagger.cwl test_jobs/aoflagger.json
-    - cwltool --no-container --preserve-environment LD_LIBRARY_PATH --preserve-environment PATH steps/find_skymodel_cal.cwl test_jobs/find_skymodel_cal.json
+    - cwltool --no-container --preserve-environment LD_LIBRARY_PATH --preserve-environment PATH --preserve-environment PYTHONPATH steps/find_skymodel_cal.cwl test_jobs/find_skymodel_cal.json