diff --git a/core/CCList.ml b/core/CCList.ml
index cddb1911..03713d62 100644
--- a/core/CCList.ml
+++ b/core/CCList.ml
@@ -51,6 +51,8 @@ let map f l =
     List.rev (List.rev_map f l) = map f l)
 *)
 
+let (>|=) l f = map f l
+
 let append l1 l2 =
   let rec direct i l1 l2 = match l1 with
     | [] -> l2
@@ -550,7 +552,7 @@ module type MONAD = sig
 end
 
 module Traverse(M : MONAD) = struct
-  open M
+  open! M
 
   let map_m f l =
     let rec aux f acc l = match l with
diff --git a/core/CCList.mli b/core/CCList.mli
index 65356855..939888c4 100644
--- a/core/CCList.mli
+++ b/core/CCList.mli
@@ -33,6 +33,10 @@ val empty : 'a t
 val map : ('a -> 'b) -> 'a t -> 'b t
 (** Safe version of map *)
 
+val (>|=) : 'a t -> ('a -> 'b) -> 'b t
+(** Infix version of [map] with reversed arguments
+    @since NEXT_RELEASE *)
+
 val append : 'a t -> 'a t -> 'a t
 (** Safe version of append *)