diff --git a/lwt.opam b/lwt.opam
index cb65673fe..84eac3254 100644
--- a/lwt.opam
+++ b/lwt.opam
@@ -16,6 +16,7 @@ maintainer: [
 ]
 authors: ["Jérôme Vouillon" "Jérémie Dimino"]
 license: "MIT"
+version: "5.8.1"
 homepage: "https://github.com/ocsigen/lwt"
 doc: "https://ocsigen.org/lwt"
 bug-reports: "https://github.com/ocsigen/lwt/issues"
diff --git a/lwt_ppx.opam b/lwt_ppx.opam
index b4a6b08fd..a5e8f4b2c 100644
--- a/lwt_ppx.opam
+++ b/lwt_ppx.opam
@@ -6,6 +6,7 @@ maintainer: [
   "Raphaël Proust <code@bnwr.net>" "Anton Bachin <antonbachin@yahoo.com>"
 ]
 authors: ["Jérôme Vouillon" "Jérémie Dimino"]
+version: "5.8.1"
 license: "MIT"
 homepage: "https://github.com/ocsigen/lwt"
 doc: "https://ocsigen.org/lwt"