diff --git a/dispatch-js.opam b/dispatch-js.opam
index b01bcf6..dd2aba0 100644
--- a/dispatch-js.opam
+++ b/dispatch-js.opam
@@ -1,3 +1,4 @@
+version: "0.5.0"
 opam-version: "2.0"
 maintainer: "Spiros Eliopoulos <spiros@inhabitedtype.com>"
 authors: "Spiros Eliopoulos <spiros@inhabitedtype.com>"
diff --git a/dispatch.opam b/dispatch.opam
index c04b403..5dbcae2 100644
--- a/dispatch.opam
+++ b/dispatch.opam
@@ -1,3 +1,4 @@
+version: "0.5.0"
 opam-version: "2.0"
 maintainer: "Spiros Eliopoulos <spiros@inhabitedtype.com>"
 authors: "Spiros Eliopoulos <spiros@inhabitedtype.com>"