diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d984cf411c0112cb1c5c9d0c95b7850f1e2017c1..e42762aa5c8a9902a64629060ef5032f25b38c4d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,10 +4,7 @@ stages:
   - build
   - release
 
-variables:
-    PYENV_PYTHON_VERSION: 3.5.5
-
-image: registry.duniter.org/docker/python3/duniterpy-builder:0.0.7
+image: registry.duniter.org/docker/python3/sakia-builder:1.1.0
 
 # SUB-TASKS
 .push_to_github:
@@ -29,15 +26,6 @@ image: registry.duniter.org/docker/python3/duniterpy-builder:0.0.7
     # github push
     - bash -c "git push --force --mirror github 2>&1 | grep -v duniter-gitlab; echo $?"
 
-.env:
-  before_script:
-    - export PYENV_ROOT="$HOME/.pyenv"
-    - export PATH="$PYENV_ROOT/bin:$PATH"
-    - eval "$(pyenv init -)"
-    - pyenv shell $PYENV_PYTHON_VERSION
-    - export PATH=/opt/qt/5.9/5.9.4/gcc_64/bin:$PATH
-    - export DISPLAY=:99
-
 .changes:
   only:
     changes:
@@ -53,28 +41,24 @@ image: registry.duniter.org/docker/python3/duniterpy-builder:0.0.7
 # TASKS
 format:
   extends:
-    - .env
     - .changes
   stage: format
   script:
-    - pyenv shell 3.6.4  # black install and run needs python 3.6.x minimum
     - pip install -r requirements_dev.txt
     - make check-format
 
 tests:
   extends:
-    - .env
     - .changes
   stage: tests
   script:
-    - pyenv shell 3.6.4  # black install needs python 3.6.x minimum
     - pip install -r requirements.txt
     - pip install -r requirements_dev.txt
+    - /start.sh # start xvfb
     - make tests
 
 build:
   extends:
-    - .env
     - .changes
   stage: build
   script:
@@ -84,12 +68,10 @@ build:
 
 release_appimage:
   extends:
-    - .env
     - .changes
   stage: release
   when: manual
   script:
-    - apt-get install wget
     - pip install -r requirements.txt
     - pip install -r requirements_deploy.txt
     - make build
@@ -102,7 +84,6 @@ release_appimage:
 
 release_pypi:
   extends:
-    - .env
     - .push_to_github
   stage: release
   when: manual
@@ -115,7 +96,6 @@ release_pypi:
     - master
 
 release_pypi_test:
-  extends: .env
   stage: release
   when: manual
   only: [tags, dev]