diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 711c7a29d7b875864e2387f8a86311fe261d63c2..be43c45dd3d56900ca054056068083fb306537e4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,7 +2,7 @@ image: registry-gitlab.pasteur.fr/dsi-tools/docker-images:redhat_ptv
 
 before_script:
   - poetry install
-  - poetry shell
+  - source `poetry env info --path`/bin/activate
   - export PYTHONPATH=$PYTHONPATH:./phagetermvirome
 
 stages: 
@@ -11,7 +11,7 @@ unit-tests:
   stage: tests
   script:
     - cd unit-tests
-    - python -m test_functions_PhageTerm_for_multi
+    - python3 -m test_functions_PhageTerm_for_multi
 quick non regression tests:
   stage: tests
   script: