diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 7fc35080..2f2ab89f 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -1,5 +1,17 @@
 = Changelog
 
+== 0.19
+
+- add regression test for #75
+- Fix `CCString.Split.{left,right}` (#75)
+- additional functions in `CCMultiSet`
+- show ocaml array type concretely in `CCRingBuffer.Make` sig
+- cleanup and more tests in `CCHeap`
+- fix bugs in `CCFlatHashtbl`, add some tests
+- add more generic printers for `CCError` and `CCResult` (close #73)
+- add `CCstring.of_char`
+- update headers
+
 == 0.18
 
 - update implem of `CCVector.equal`
diff --git a/_oasis b/_oasis
index c89760dd..6a4e3702 100644
--- a/_oasis
+++ b/_oasis
@@ -1,6 +1,6 @@
 OASISFormat: 0.4
 Name:        containers
-Version:     0.18
+Version:     0.19
 Homepage:    https://github.com/c-cube/ocaml-containers
 Authors:     Simon Cruanes
 License:     BSD-2-clause
diff --git a/src/core/CCError.mli b/src/core/CCError.mli
index c0cbef2e..fef90137 100644
--- a/src/core/CCError.mli
+++ b/src/core/CCError.mli
@@ -192,13 +192,13 @@ val pp : 'a printer -> ('a, string) t printer
 
 val pp': 'a printer -> 'e printer -> ('a, 'e) t printer
 (** Printer that is generic on the error type
-    @since NEXT_RELEASE *)
+    @since 0.19 *)
 
 val print : 'a formatter -> ('a, string) t formatter
 
 val print' : 'a formatter -> 'e formatter -> ('a, 'e) t formatter
 (** Printer that is generic on the error type
-    @since NEXT_RELEASE *)
+    @since 0.19 *)
 
 (** {2 Global Exception Printers}
 
diff --git a/src/core/CCResult.mli b/src/core/CCResult.mli
index 20a21fb8..9a1dedc2 100644
--- a/src/core/CCResult.mli
+++ b/src/core/CCResult.mli
@@ -195,11 +195,11 @@ val pp : 'a printer -> ('a, string) t printer
 
 val pp': 'a printer -> 'e printer -> ('a, 'e) t printer
 (** Printer that is generic on the error type
-    @since NEXT_RELEASE *)
+    @since 0.19 *)
 
 val print : 'a formatter -> ('a, string) t formatter
 
 val print' : 'a formatter -> 'e formatter -> ('a, 'e) t formatter
 (** Printer that is generic on the error type
-    @since NEXT_RELEASE *)
+    @since 0.19 *)
 
diff --git a/src/core/CCString.mli b/src/core/CCString.mli
index 5794b524..45de6bd2 100644
--- a/src/core/CCString.mli
+++ b/src/core/CCString.mli
@@ -96,7 +96,7 @@ val pad : ?side:[`Left|`Right] -> ?c:char -> int -> string -> string
 
 val of_char : char -> string
 (** [of_char 'a' = "a"]
-    @since NEXT_RELEASE *)
+    @since 0.19 *)
 
 val of_gen : char gen -> string
 val of_seq : char sequence -> string
diff --git a/src/data/CCMultiSet.ml b/src/data/CCMultiSet.ml
index c5c0bd3c..3b0bf680 100644
--- a/src/data/CCMultiSet.ml
+++ b/src/data/CCMultiSet.ml
@@ -85,16 +85,16 @@ module type S = sig
   val of_seq : elt sequence -> t
 
   val of_list_mult : (elt * int) list -> t
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 
   val to_list_mult : t -> (elt * int) list
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 
   val to_seq_mult : t -> (elt * int) sequence
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 
   val of_seq_mult : (elt * int) sequence -> t
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 end
 
 module Make(O : Set.OrderedType) = struct
diff --git a/src/data/CCMultiSet.mli b/src/data/CCMultiSet.mli
index 4b83ee70..8dcb6b9a 100644
--- a/src/data/CCMultiSet.mli
+++ b/src/data/CCMultiSet.mli
@@ -85,16 +85,16 @@ module type S = sig
   val of_seq : elt sequence -> t
 
   val of_list_mult : (elt * int) list -> t
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 
   val to_list_mult : t -> (elt * int) list
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 
   val to_seq_mult : t -> (elt * int) sequence
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 
   val of_seq_mult : (elt * int) sequence -> t
-  (** @since NEXT_RELEASE *)
+  (** @since 0.19 *)
 end
 
 module Make(O : Set.OrderedType) : S with type elt = O.t