diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b8020b7f..6dca34e3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,6 +5,9 @@ services:
 variables:
   MYSQL_DATABASE: re2o
   MYSQL_ROOT_PASSWORD: re2o
+  LANG: 'en_US.UTF-8'
+  LC_ALL: 'en_US.UTF-8'
+  LANGUAGE: 'en_US.UTF-8'
 
 image: debian:stretch
 stages:
@@ -15,10 +18,6 @@ stages:
 
 build:
   stage: build
-  variables:
-    LANG: 'en_US.UTF-8'
-    LC_ALL: 'en_US.UTF-8'
-    LANGUAGE: 'en_US.UTF-8'
   script:
   - apt-get -qq update
   - DEBIAN_FRONTEND=noninteractive apt-get -qq install -y locales
@@ -29,19 +28,19 @@ build:
 
 lint:
   stage: lint
-  variables:
-    LANG: 'en_US.UTF-8'
-    LC_ALL: 'en_US.UTF-8'
-    LANGUAGE: 'en_US.UTF-8'
   script:
+  - apt-get -qq update
+  - DEBIAN_FRONTEND=noninteractive apt-get -qq install -y locales
+  - sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && dpkg-reconfigure --frontend=noninteractive locales && update-locale LANG=en_US.UTF-8
+  - ./install_re2o.sh ci-setup
   - pylint3 --load-plugins pylint_django cotisations machines re2o logs topologie preferences search users || if [ $? -ne 1 ]; then exit 0; else exit 1; fi
 
 
 tests:
   stage: tests
-  variables:
-    LANG: 'en_US.UTF-8'
-    LC_ALL: 'en_US.UTF-8'
-    LANGUAGE: 'en_US.UTF-8'
   script:
+  - apt-get -qq update
+  - DEBIAN_FRONTEND=noninteractive apt-get -qq install -y locales
+  - sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && dpkg-reconfigure --frontend=noninteractive locales && update-locale LANG=en_US.UTF-8
+  - ./install_re2o.sh ci-setup
   - python3 manage.py test