diff --git a/CI/.drone.yml b/CI/.drone.yml
index f1b442f003e..8594d0b486d 100644
--- a/CI/.drone.yml
+++ b/CI/.drone.yml
@@ -2,6 +2,17 @@ kind: pipeline
 name: default
 
 steps:
+# test ocaml petstore client
+- name: ocaml-test
+  image: ocaml/opam2:4.07
+  commands:
+  - sudo apt-get -y install m4
+  - cd samples/client/petstore/ocaml
+  - opam install ppx_deriving_yojson cohttp ppx_deriving cohttp-lwt-unix 
+  - opam pin add ocaml-migrate-parsetree 1.3.1
+  - eval $(opam env)
+  - sudo chmod -R 777 .
+  - dune build --build-dir=./_build
 # test haskell client
 - name: haskell-client-test
   image: haskell:8.6.5
@@ -28,13 +39,3 @@ steps:
   - /bin/bash bin/run-all-petstore
   # generate all petstore samples (openapi3)
   - /bin/bash bin/openapi3/run-all-petstore
-# test ocaml petstore client
-- name: ocaml-test
- image: ocaml/opam2:4.07
- commands:
- - sudo apt-get -y install m4
- - cd samples/client/petstore/ocaml
- - opam install ppx_deriving_yojson cohttp ppx_deriving cohttp-lwt-unix pin ocaml-migrate-parsetree 1.3.1
- - eval $(opam env)
- - sudo chmod -R 777 .
- - dune build --build-dir=./_build