diff --git a/linol-lwt.opam b/linol-lwt.opam
index 637cc326..706790a0 100644
--- a/linol-lwt.opam
+++ b/linol-lwt.opam
@@ -1,5 +1,6 @@
 opam-version: "2.0"
 version: "0.2"
+license: "MIT"
 maintainer: "simon.cruanes.2007@m4x.org"
 author: "Simon Cruanes"
 homepage: "https://github.com/c-cube/linol"
diff --git a/linol.opam b/linol.opam
index dd559bd9..58851e0d 100644
--- a/linol.opam
+++ b/linol.opam
@@ -1,6 +1,7 @@
 opam-version: "2.0"
 version: "0.2"
 maintainer: "simon.cruanes.2007@m4x.org"
+license: "MIT"
 author: "Simon Cruanes"
 homepage: "https://github.com/c-cube/linol"
 synopsis: "LSP server library"