diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 226a6b9f277f93cddb1a9b246c1e049f9645d0dd..39f8905b535d1208e6b66891af4e3350fd0cc2fb 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,54 +7,54 @@ stages:
   - install
   - test
 
-env:ubuntu_zesty:
-  image: keckj/hysop:ubuntu_zesty
+env:bionic:
+  image: keckj/hysop:bionic
   stage: env
   script:
       - "sh ci/scripts/version.sh"
 
-config:ubuntu_zesty:
-  image: keckj/hysop:ubuntu_zesty
+config:bionic:
+  image: keckj/hysop:bionic
   stage: configure
   script: 
       - "sh ci/scripts/config.sh $CI_PROJECT_DIR/build/gcc-6   $CI_PROJECT_DIR/install/gcc-6   gcc-6     g++-6       gfortran-6"
       - "sh ci/scripts/config.sh $CI_PROJECT_DIR/build/clang-6 $CI_PROJECT_DIR/install/clang-6 clang-6.0 clang++-6.0 gfortran-6"
   dependencies:
-    - env:ubuntu_zesty
+    - env:bionic
   artifacts:
     paths:
         - $CI_PROJECT_DIR/build
 
-build:ubuntu_zesty:
-  image: keckj/hysop:ubuntu_zesty
+build:bionic:
+  image: keckj/hysop:bionic
   stage: build
   script: 
       - "sh ci/scripts/build.sh $CI_PROJECT_DIR/build/gcc-6   gcc-6     g++-6       gfortran-6"
       - "sh ci/scripts/build.sh $CI_PROJECT_DIR/build/clang-6 clang-6.0 clang++-6.0 gfortran-6"
   dependencies:
-    - config:ubuntu_zesty
+    - config:bionic
   artifacts:
     paths:
         - $CI_PROJECT_DIR/build
 
-install:ubuntu_zesty:
-  image: keckj/hysop:ubuntu_zesty
+install:bionic:
+  image: keckj/hysop:bionic
   stage: install
   script: 
       - "sh ci/scripts/install.sh $CI_PROJECT_DIR/build/gcc-6 $CI_PROJECT_DIR/install/gcc-6"
   dependencies:
-    - build:ubuntu_zesty
+    - build:bionic
   artifacts:
     paths:
         - $CI_PROJECT_DIR/install
 
-test:ubuntu_zesty:
-  image: keckj/hysop:ubuntu_zesty
+test:bionic:
+  image: keckj/hysop:bionic
   stage: test
   script:
     - "sh ci/scripts/test.sh $CI_PROJECT_DIR/install/gcc-6 $CI_PROJECT_DIR/hysop $CI_PROJECT_DIR/cache"
   dependencies:
-    - install:ubuntu_zesty
+    - install:bionic
   cache:
     paths:
       - $CI_PROJECT_DIR/cache