diff --git a/dune-project b/dune-project
index 0d5e418..4bb9e19 100644
--- a/dune-project
+++ b/dune-project
@@ -14,7 +14,9 @@
 
 (authors "Roddy MacSween <github@roddymacsween.co.uk>")
 
-(maintainers "Roddy MacSween <github@roddymacsween.co.uk>")
+(maintainers
+  "Roddy MacSween <github@roddymacsween.co.uk>"
+  "Antonio Monteiro <anmonteiro@gmail.com>")
 
 (generate_opam_files true)
 
diff --git a/pg_query.opam b/pg_query.opam
index 6189445..84409cd 100644
--- a/pg_query.opam
+++ b/pg_query.opam
@@ -4,7 +4,10 @@ version: "0.9.8"
 synopsis: "Bindings to libpg_query for parsing PostgreSQL"
 description:
   "OCaml bindings to libpg_query for parsing PostgreSQL, and a command-line tool that uses them"
-maintainer: ["Roddy MacSween <github@roddymacsween.co.uk>"]
+maintainer: [
+  "Roddy MacSween <github@roddymacsween.co.uk>"
+  "Antonio Monteiro <anmonteiro@gmail.com>"
+]
 authors: ["Roddy MacSween <github@roddymacsween.co.uk>"]
 license: "MIT"
 homepage: "https://github.com/roddyyaga/pg_query-ocaml"