diff -uNr ppx_pipebang-113.33.00/_oasis ppx_pipebang-113.33.00+4.03/_oasis
--- ppx_pipebang-113.33.00/_oasis	2016-03-09 16:44:54.000000000 +0100
+++ ppx_pipebang-113.33.00+4.03/_oasis	2016-03-22 15:13:51.000000000 +0100
@@ -1,8 +1,8 @@
 OASISFormat:      0.4
-OCamlVersion:     >= 4.02.3
+OCamlVersion:     >= 4.03.0
 FindlibVersion:   >= 1.3.2
 Name:             ppx_pipebang
-Version:          113.33.00
+Version:          113.33.00+4.03
 Synopsis:         A ppx rewriter that inlines reverse application operators `|>` and `|!`
 Authors:          Jane Street Group, LLC <opensource@janestreet.com>
 Copyrights:       (C) 2015-2016 Jane Street Group LLC <opensource@janestreet.com>
diff -uNr ppx_pipebang-113.33.00/opam ppx_pipebang-113.33.00+4.03/opam
--- ppx_pipebang-113.33.00/opam	2016-03-18 12:08:01.000000000 +0100
+++ ppx_pipebang-113.33.00+4.03/opam	2016-03-22 17:51:37.000000000 +0100
@@ -16,4 +16,4 @@
   "ppx_driver"
   "ppx_tools"  {>= "0.99.3"}
 ]
-available: [ ocaml-version >= "4.02.3" ]
+available: [ ocaml-version >= "4.03.0" ]
diff -uNr ppx_pipebang-113.33.00/src/ppx_pipebang.ml ppx_pipebang-113.33.00+4.03/src/ppx_pipebang.ml
--- ppx_pipebang-113.33.00/src/ppx_pipebang.ml	2016-03-09 16:44:54.000000000 +0100
+++ ppx_pipebang-113.33.00+4.03/src/ppx_pipebang.ml	2016-03-22 15:13:51.000000000 +0100
@@ -11,16 +11,16 @@
     let loc = e.pexp_loc in
     match e.pexp_desc with
     | Pexp_apply ({ pexp_desc = Pexp_ident { txt = Lident ("|!" | "|>"); _ }; _ },
-                  [("", x); ("", y)]) -> begin
+                  [(Nolabel, x); (Nolabel, y)]) -> begin
         let x = self#expression x in
         let y = self#expression y in
         match y with
         | { pexp_desc = Pexp_construct (id, None); _ } ->
           { y with pexp_desc = Pexp_construct (id, Some x) }
         | { pexp_desc = Pexp_apply (f, args); pexp_attributes = []; _ } ->
-          { e with pexp_desc = Pexp_apply (f, args @ [("", x)]) }
+          { e with pexp_desc = Pexp_apply (f, args @ [(Nolabel, x)]) }
         | _ ->
-          { e with pexp_desc = Pexp_apply (y, [("", x)]) }
+          { e with pexp_desc = Pexp_apply (y, [(Nolabel, x)]) }
       end
     | Pexp_ident { txt = Lident ("|!" | "|>" as s); _ } ->
       Location.raise_errorf ~loc "%s must be applied to two arguments" s