diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e171764c5751a7af63996da356e8c95aa9b03b05..7835b983636269c80acb4ae8081c85d103891938 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -34,6 +34,7 @@ test:centos6.6:
     - echo "... done running global 'before_script'."
   script:
   - echo "Testing on CentOS 6..."
+  - ls /scicore/soft/apps/Python/2.7.5-goolf-1.4.10/lib/python2.7/site-packages/matplotlib-1.3.1-py2.7-linux-x86_64.egg/
   - echo "    Building OST..."
   - mkdir build-ci
   - cd build-ci