diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 21f856c6d52127a1b65c2b2fdc70d3c80fa6b771..096eb19564e4474261eacbb0fec7099437aba3b9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,7 +5,7 @@ stages:
 
 variables:
   CPU_CORES: "10"
-  OCAML: "ocaml-base-compiler.4.14.0"
+  OCAML: "ocaml-variants.4.14.0+options ocaml-option-flambda"
 
 .template: &template
   stage: build