diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7742968f92f18ba6431f5403b70124bccd20731e..1626c2e0d9d86699090318df57272aa565d2842f 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,7 +11,7 @@ py36:
   script: 
     - python -V
     - pip -V
-
+    - cat requirements.txt | xargs -I{} pip index versions {} --python-version=3.6
 py37:
   stage: test
   image: python:3.7