diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 9780e14229a1b3ca34de711489e3d5b0a2a3aad5..c4f06d540144848aca01fd001cdb2049473f3bbf 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