diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5982761be0467a9a75fa671ae87e3b1bd726b8a7..d62de6b097c950cab9ee54676276906d2eb21680 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -157,6 +157,7 @@ crystal_pion_simulation:
   tags:
     - silicon
   script:
+    - source options/env.sh
     - npsim --runType batch --numberOfEvents 100 --compactFile ${DETECTOR_PATH}/topside.xml --inputFiles  data/emcal_electrons.hepmc  --outputFile  sim_output/output_emcal_electrons.root
 
 deploy_results: