diff --git a/pkgs/development/ocaml-modules/janestreet/0.15.nix b/pkgs/development/ocaml-modules/janestreet/0.15.nix
index 3f3ee5ae88f4..8510b3a8c291 100644
--- a/pkgs/development/ocaml-modules/janestreet/0.15.nix
+++ b/pkgs/development/ocaml-modules/janestreet/0.15.nix
@@ -535,7 +535,7 @@ with self;
     pname = "ppx_css";
     hash = "09dpmj3f3m3z1ji9hq775iqr3cfmv5gh7q9zlblizj4wx4y0ibyi";
     meta.description = "A ppx that takes in css strings and produces a module for accessing the unique names defined within";
-    propagatedBuildInputs = [ core_kernel ppxlib js_of_ocaml js_of_ocaml-ppx sedlex_2 ];
+    propagatedBuildInputs = [ core_kernel ppxlib js_of_ocaml js_of_ocaml-ppx sedlex ];
   };
 
   ppx_disable_unused_warnings = janePackage {