diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b553430e4..bdc12d497 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,21 +15,15 @@ stages:
    - build-doc
    - deploy-doc
 
-test:php-7:
-   image: chill/ci-image:php-7
+test:php-7.2:
+   image: chill/ci-image:php-7.2
    stage: test
    <<: *test_definition
-   script: php vendor/bin/phpunit
-   
-test:php-7.1:
-   image: chill/ci-image:php-7.1
-   stage: test
-   <<: *test_definition
-   script: php vendor/bin/phpunit
+   script: APP_ENV=test php vendor/bin/phpunit
 
 deploy-packagist:
    stage: deploy
-   image: chill/ci-image:php-7
+   image: chill/ci-image:php-7.2
    before_script: 
        # test that PACKAGIST USERNAME and PACKAGIST_TOKEN variable are set
        - if [ -z ${PACKAGIST_USERNAME+x} ]; then echo "Please set PACKAGIST_USERNAME variable"; exit -1;  fi
@@ -42,7 +36,7 @@ deploy-packagist:
 api-doc-build:
    stage: build-doc
    environment: api-doc
-   image: chill/ci-image:php-7
+   image: chill/ci-image:php-7.2
    before_script:
       - mkdir api-doc
    script: apigen generate --destination api-doc/$CI_BUILD_REF_NAME/$CI_PROJECT_NAME