diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 504fc5948e4f6fbe5032304355f4a4ae1f00b4c8..0b01830e23d39d6dbeb472f892f6d31adcd4e4e1 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -28,6 +28,7 @@ before_script:
   - cd ..
 
 # compile pyswiftsim
+  - cat swiftsim/Makefile
   - python3 setup.py install --with-swift $LHOME/swiftsim --user
 
 # compile the docs