diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8c1899a306ab9f984f4eba09962c68e9aae7f10b..7f70053fdaea6cfc761214e1ba55177365260907 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -76,11 +76,12 @@ install_and_test_310:
     expire_in: 8d
 
 install_and_test_311:
-  image: python:3.11
+  image: registry.lis-lab.fr:5005/dev/ltfatpy/python-ci:3.11
   stage: test
+  before_script:
+    - echo "image registry 3.11"
   script:
-    - pip3 install cython
-    - pip3 install --no-build-isolation -e . --no-deps
+    - pip3 install -e . --no-deps
     - python3 -m pytest
   artifacts:
     when: always
@@ -91,6 +92,7 @@ install_and_test_311:
   only:
     - ci39-python12
 
+
 # Tests on X86_64 ubuntu
 ubuntu:X86_64:
   image: registry.lis-lab.fr:5005/dev/ltfatpy/ubuntu:X86_64
@@ -135,6 +137,7 @@ ubuntu:i686:
     paths:
       - public
 
+
 # Doc Generation
 pages:
   <<: *doc