diff --git a/opam b/opam
index 29736852e..83616c1d9 100644
--- a/opam
+++ b/opam
@@ -36,7 +36,7 @@ depends: [
   "ocamlfind" {build}
   "ounit" {="2.0.0"}
   "ppx_deriving" {>="4.1"}
-  "reason" {="1.13.3"}
+  "reason" {="1.13.4"}
   "sawja" {>="1.5.2"}
   "xmlm" {>="1.2.0"}
 ]