diff --git a/CHANGES.md b/CHANGES.md
index 3e0465c0..9a299e1c 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,4 +1,11 @@
 
+## 0.4
+
+- easy accessor to the query parameters in path
+- fix: header field names are case insensitive
+- doc: add note on jemalloc in the readme
+- log error when closing client socket
+
 ## 0.3
 
 - feat(http_of_dir): use `file` to guess mime type of file
diff --git a/src/Tiny_httpd.mli b/src/Tiny_httpd.mli
index 8ec54bdc..00d07730 100644
--- a/src/Tiny_httpd.mli
+++ b/src/Tiny_httpd.mli
@@ -235,7 +235,7 @@ module Request : sig
 
   val query : _ t -> (string*string) list
   (** Decode the query part of the {!path} field
-      @since NEXT_RELEASE *)
+      @since 0.4 *)
 
   val body : 'b t -> 'b
   (** Request body, possibly empty. *)
diff --git a/src/Tiny_httpd_util.mli b/src/Tiny_httpd_util.mli
index 681900c6..e1ed5d36 100644
--- a/src/Tiny_httpd_util.mli
+++ b/src/Tiny_httpd_util.mli
@@ -15,7 +15,7 @@ val percent_decode : string -> string option
 
 val get_query : string -> string
 (** Obtain the query part of a path
-    @since NEXT_RELEASE *)
+    @since 0.4 *)
 
 val parse_query : string -> ((string*string) list, string) result
 (** Parse a query as a list of ['&'] or [';'] separated [key=value] pairs.
diff --git a/tiny_httpd.opam b/tiny_httpd.opam
index d8459bf2..ca224e42 100644
--- a/tiny_httpd.opam
+++ b/tiny_httpd.opam
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "0.3"
+version: "0.4"
 authors: ["Simon Cruanes"]
 maintainer: "simon.cruanes.2007@m4x.org"
 license: "MIT"