diff --git a/src/dune b/src/dune
index 2a1d301..86fc201 100644
--- a/src/dune
+++ b/src/dune
@@ -31,8 +31,7 @@
   tyxml
   tyxml.functor
   uri
-  uuidm
-  yojson)
+  uuidm)
  (preprocess
   (pps lwt_ppx)))
 
@@ -50,6 +49,4 @@
  (name island_client)
  (modules island_client)
  (libraries js_of_ocaml brr)
- (modes js)
- (preprocess
-  (pps js_of_ocaml-ppx)))
+ (modes js))