diff --git a/dune-project b/dune-project
index 2a672e0a84..2aaad8ad19 100644
--- a/dune-project
+++ b/dune-project
@@ -103,13 +103,16 @@
    dune
    (alcotest :with-test)
    (fmt :with-test)
-   ppx_deriving_yojson
+   ppx_deriving_rpc
    re
+   rpclib.core
+   rpclib.json
+   result
+   rresult
    uri
    (uuid :with-test)
    (xapi-log (= :version))
    (xapi-stdext-threads (= :version))
-   yojson
   )
   (synopsis "Allows to instrument code to generate tracing information")
   (description "This library provides modules to allow gathering runtime traces.")