diff --git a/CHANGES.md b/CHANGES.md
index 8aaa01936..a3f2a708c 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,6 @@
 ## Unreleased
 
+- cohttp-eio: client: use permissive argument type for make_generic
 - cohttp-eio: Improve error handling in example server (talex5 #1023)
 - cohttp-eio: Don't blow up `Server.callback` on client disconnections. (mefyl #1015)
 - http: Fix assertion in `Source.to_string_trim` when `pos <> 0` (mefyl #1017)
diff --git a/cohttp-eio/src/client.mli b/cohttp-eio/src/client.mli
index 81e7dc5d8..6c3fcee6a 100644
--- a/cohttp-eio/src/client.mli
+++ b/cohttp-eio/src/client.mli
@@ -24,6 +24,6 @@ val make :
     - URIs of the form "httpunix://unix-path/http-path" connect to the given
       Unix path. *)
 
-val make_generic : (sw:Switch.t -> Uri.t -> _ Eio.Net.stream_socket) -> t
+val make_generic : (sw:Switch.t -> Uri.t -> Eio.Flow.two_way_ty r) -> t
 (** [make_generic connect] is an HTTP client that uses [connect] to get the
     connection to use for a given URI. *)