diff --git a/CHANGES.md b/CHANGES.md
index 2f67007..fd440d1 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,6 +1,32 @@
 ## Pending
 
+## 0.17
+
+- add optional middlewares to tiny_httpd_ws
+- add `Head_middleware.trivial`
+- add `Head_middleware.t`; accept it for SSE/websocket
+- add `Request.pp_with` which is a customizable printer
+- expose `Response.Bad_req`
+- use `iostream` for IOs
+- add a `hmap`-typed field to requests, to carry request specific data
+    across middlewares
+- http_of_dir: ability to setup socket timeout
+- add `tiny_httpd.ws`, a websocket library
+- add `Response_code.is_success`
+
 - fix: No setting of sigprocmask on Windows
+- fix: give the correct code+error if protocol upgrade fails
+- remove potentially security-leaking debug line
+- fix: avoid collisions in `Mime_` private module
+- fix middlewares: merge-sort per-request middleares and global ones
+- fix tiny_httpd dir: handle html files
+
+- perf: optim in read_line
+- perf: remove some uses of scanf in parsing
+
+- require iostream-camlzip >= 0.2.1
+- add optional dependency on `logs`
+- logs is a testdep for tiny_httpd_camlzip
 
 ## 0.16
 
diff --git a/dune-project b/dune-project
index d03fd93..f56ce53 100644
--- a/dune-project
+++ b/dune-project
@@ -4,7 +4,7 @@
 
 (authors c-cube)
 (maintainers c-cube)
-(version 0.16)
+(version 0.17)
 (source (github c-cube/tiny_httpd))
 (homepage https://github.com/c-cube/tiny_httpd/)
 (license MIT)
diff --git a/src/core/request.mli b/src/core/request.mli
index e4242bc..601d961 100644
--- a/src/core/request.mli
+++ b/src/core/request.mli
@@ -11,7 +11,7 @@ type 'body t = private {
       (** Host header, mandatory. It can also be found in {!headers}. *)
   client_addr: Unix.sockaddr;  (** Client address. Available since 0.14. *)
   headers: Headers.t;  (** List of headers. *)
-  mutable meta: Hmap.t;  (** Metadata. @since NEXT_RELEASE *)
+  mutable meta: Hmap.t;  (** Metadata. @since 0.17 *)
   http_version: int * int;
       (** HTTP version. This should be either [1, 0] or [1, 1]. *)
   path: string;  (** Full path of the requested URL. *)
@@ -38,16 +38,16 @@ type 'body t = private {
 
 val add_meta : _ t -> 'a Hmap.key -> 'a -> unit
 (** Add metadata
- @since NEXT_RELEASE *)
+ @since 0.17 *)
 
 val get_meta : _ t -> 'a Hmap.key -> 'a option
 (** Get metadata
- @since NEXT_RELEASE *)
+ @since 0.17 *)
 
 val get_meta_exn : _ t -> 'a Hmap.key -> 'a
 (** Like {!get_meta} but can fail
     @raise Invalid_argument if not present
- @since NEXT_RELEASE *)
+ @since 0.17 *)
 
 val pp_with :
   ?mask_header:(string -> bool) ->
@@ -94,7 +94,7 @@ val set_header : string -> string -> 'a t -> 'a t
 
 val remove_header : string -> 'a t -> 'a t
 (** Remove one instance of this header.
-      @since NEXT_RELEASE *)
+      @since 0.17 *)
 
 val update_headers : (Headers.t -> Headers.t) -> 'a t -> 'a t
 (** Modify headers using the given function.
diff --git a/src/core/response.mli b/src/core/response.mli
index 4cf0f19..1586f30 100644
--- a/src/core/response.mli
+++ b/src/core/response.mli
@@ -38,7 +38,7 @@ val update_headers : (Headers.t -> Headers.t) -> t -> t
 
 val remove_header : string -> t -> t
 (** Remove one instance of this header.
-      @since NEXT_RELEASE *)
+      @since 0.17 *)
 
 val set_headers : Headers.t -> t -> t
 (** Set all headers.
diff --git a/src/core/response_code.mli b/src/core/response_code.mli
index fd0663d..3755fce 100644
--- a/src/core/response_code.mli
+++ b/src/core/response_code.mli
@@ -17,4 +17,4 @@ val descr : t -> string
 
 val is_success : t -> bool
 (** [is_success code] is true iff [code] is in the [2xx] or [3xx] range.
-      @since NEXT_RELEASE *)
+      @since 0.17 *)
diff --git a/src/core/server.mli b/src/core/server.mli
index 05ef639..b585dfa 100644
--- a/src/core/server.mli
+++ b/src/core/server.mli
@@ -41,12 +41,12 @@ end
 
     These middlewares are simpler than full {!Middleware.t} and
     work in more contexts.
-    @since NEXT_RELEASE *)
+    @since 0.17 *)
 module Head_middleware : sig
   type t = { handle: 'a. 'a Request.t -> 'a Request.t }
   (** A handler that takes the request, without its body,
     and possibly modifies it.
-    @since NEXT_RELEASE *)
+    @since 0.17 *)
 
   val trivial : t
   (** Pass through *)
@@ -260,10 +260,10 @@ val add_route_server_sent_handler :
 (** {2 Upgrade handlers}
 
     These handlers upgrade the connection to another protocol.
-    @since NEXT_RELEASE *)
+    @since 0.17 *)
 
 (** Handler that upgrades to another protocol.
-  @since NEXT_RELEASE *)
+  @since 0.17 *)
 module type UPGRADE_HANDLER = sig
   type handshake_state
   (** Some specific state returned after handshake *)
@@ -287,7 +287,7 @@ module type UPGRADE_HANDLER = sig
 end
 
 type upgrade_handler = (module UPGRADE_HANDLER)
-(** @since NEXT_RELEASE *)
+(** @since 0.17 *)
 
 val add_upgrade_handler :
   ?accept:(unit Request.t -> (unit, Response_code.t * string) result) ->
diff --git a/src/core/util.mli b/src/core/util.mli
index 1e5a20f..1971b5a 100644
--- a/src/core/util.mli
+++ b/src/core/util.mli
@@ -37,8 +37,8 @@ val parse_query : string -> ((string * string) list, string) result
 
 val show_sockaddr : Unix.sockaddr -> string
 (** Simple printer for socket addresses.
-    @since NEXT_RELEASE *)
+    @since 0.17 *)
 
 val is_ipv6_str : string -> bool
 (** Is this string potentially an IPV6 address?
-    @since NEXT_RELEASE *)
+    @since 0.17 *)
diff --git a/tiny_httpd.opam b/tiny_httpd.opam
index c144b51..07d095b 100644
--- a/tiny_httpd.opam
+++ b/tiny_httpd.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "0.16"
+version: "0.17"
 synopsis: "Minimal HTTP server using threads"
 maintainer: ["c-cube"]
 authors: ["c-cube"]
diff --git a/tiny_httpd_camlzip.opam b/tiny_httpd_camlzip.opam
index 469935b..01453b6 100644
--- a/tiny_httpd_camlzip.opam
+++ b/tiny_httpd_camlzip.opam
@@ -1,6 +1,6 @@
 # This file is generated by dune, edit dune-project instead
 opam-version: "2.0"
-version: "0.16"
+version: "0.17"
 synopsis: "Interface to camlzip for tiny_httpd"
 maintainer: ["c-cube"]
 authors: ["c-cube"]