CI: print perl version
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5604ae3..79e24f5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,6 +10,7 @@
     - venv/
 
 before_script:
+  - perl -v
   - python -m venv venv
   - source venv/bin/activate
   - export PYTHONPATH=PYTHONPATH:.