diff --git a/src/dune b/src/dune
index a50b09a..54cc770 100644
--- a/src/dune
+++ b/src/dune
@@ -1,7 +1,7 @@
 (library
   (name flitter)
   (wrapped false)
-  (libraries core lwt.unix notty notty.unix re color sexp_pretty)
+  (libraries core core_kernel.caml_unix lwt.unix notty notty.unix re color sexp_pretty)
   (preprocess (pps lwt_ppx ppx_sexp_conv))
   )