diff --git a/ppx_regexp.opam b/ppx_regexp.opam
index 2b629e6..078a28b 100644
--- a/ppx_regexp.opam
+++ b/ppx_regexp.opam
@@ -10,7 +10,7 @@ bug-reports: "https://github.com/paurkedal/ppx_regexp/issues"
 depends: [
   "ocaml" {>= "4.02.3"}
   "dune" {>= "1.11"}
-  "ppxlib" {>= "0.9.0"}
+  "ppxlib" {>= "0.36.0"}
   "re" {>= "1.7.2"}
   "qcheck" {with-test}
 ]
diff --git a/ppx_regexp/ppx_regexp.ml b/ppx_regexp/ppx_regexp.ml
index 6b095da..420993d 100644
--- a/ppx_regexp/ppx_regexp.ml
+++ b/ppx_regexp/ppx_regexp.ml
@@ -214,7 +214,7 @@ let transformation = object
          | Pexp_match (e, cases) ->
             let cases, binding = transform_cases ~loc cases in
             ([%expr let _ppx_regexp_v = [%e e] in [%e cases]], binding :: acc)
-         | Pexp_function (cases) ->
+         | Pexp_function ([], _, Pfunction_cases (cases, _, _)) ->
             let cases, binding = transform_cases ~loc cases in
             ([%expr fun _ppx_regexp_v -> [%e cases]], binding :: acc)
          | _ ->