diff --git a/OSCADml.opam b/OSCADml.opam
index 849c527..c8ba67e 100644
--- a/OSCADml.opam
+++ b/OSCADml.opam
@@ -18,7 +18,7 @@ depends: [
   "ocaml" {>= "4.14.0"}
   "gg" {>= "1.0.0"}
   "cairo2" {>= "0.6.2"}
-  "OCADml" {>= "0.4.0"}
+  "OCADml" {>= "0.5.0"}
   "odoc" {with-doc}
 ]
 build: [