diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c2465cfc..080e52d2 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,8 +12,6 @@
 
 # see https://hub.docker.com/_/mono/
 image: mono:4.6.2.7
-language: csharp
-os: linux
 
 stages:
   - test