diff --git a/.drone.yml b/.drone.yml
index e1363ac..90b928b 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -71,6 +71,8 @@ steps:
     image: ocaml/opam
     commands:
       - ls -als tests/extracted
+      - opam init
+      - eval $(opam env)
       - bin/run_tests ocaml ml
 
 volumes: