diff --git a/ppx_deriving_cmdliner.opam b/ppx_deriving_cmdliner.opam
index 9c4c4e0..a142b43 100644
--- a/ppx_deriving_cmdliner.opam
+++ b/ppx_deriving_cmdliner.opam
@@ -28,7 +28,7 @@ depends: [
   "result"
   "ppx_deriving" {>= "5.0"}
   "dune"
-  "ppxlib"       {>= "0.14.0"}
+  "ppxlib"       {>= "0.18.0"}
   "alcotest"     {with-test}
 ]
 synopsis: "Cmdliner.Term.t generator"