diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 49ac91e..42d745c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,8 +7,7 @@
 #
 # Specify the docker image to use (only used if using docker runners)
 # See http://doc.gitlab.com/ee/ci/docker/using_docker_images.html)
-default:
-  image: rikorose/gcc-cmake
+
 stages:
 - test
 unit-test-job: