diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e52914b4..27d8a5194 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## 3.8
+
+- add `Containers_bencode` for lightweight (de)ser
+- perf(CCHash): improve a bit commutative hashing of arrays/lists
+- perf(CCHash): only hash prefix of string/bytes
+- feat(CCList): Add `Assoc.{keys,values,map_values}`
+- feat(CCArray): add `CCArray.map_inplace`
+- add `CCString.{to_hex,of_hex}`
+
+- fix(Atomic): prevent race conditions under flambda, for now
+
 ## 3.7
 
 - add `Format.styling`
diff --git a/containers-data.opam b/containers-data.opam
index 58b551dbe..bf17602fd 100644
--- a/containers-data.opam
+++ b/containers-data.opam
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "3.7"
+version: "3.8"
 author: "Simon Cruanes"
 maintainer: "simon.cruanes.2007@m4x.org"
 synopsis: "A set of advanced datatypes for containers"
diff --git a/containers-thread.opam b/containers-thread.opam
index 13bb82363..eb9adaabc 100644
--- a/containers-thread.opam
+++ b/containers-thread.opam
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "3.7"
+version: "3.8"
 author: "Simon Cruanes"
 maintainer: "simon.cruanes.2007@m4x.org"
 license: "BSD-2-Clause"
diff --git a/containers.opam b/containers.opam
index 179fede21..315ba9e73 100644
--- a/containers.opam
+++ b/containers.opam
@@ -1,6 +1,6 @@
 opam-version: "2.0"
 name: "containers"
-version: "3.7"
+version: "3.8"
 author: "Simon Cruanes"
 maintainer: "simon.cruanes.2007@m4x.org"
 license: "BSD-2-Clause"
diff --git a/src/bencode/containers_bencode.mli b/src/bencode/containers_bencode.mli
index ac55c02a1..8dae8aa85 100644
--- a/src/bencode/containers_bencode.mli
+++ b/src/bencode/containers_bencode.mli
@@ -2,7 +2,7 @@
 
     See https://en.wikipedia.org/wiki/Bencode .
 
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 module Str_map : module type of Map.Make(String)
 
diff --git a/src/core/CCArray.mli b/src/core/CCArray.mli
index 25c8d32a5..e0a58354c 100644
--- a/src/core/CCArray.mli
+++ b/src/core/CCArray.mli
@@ -60,7 +60,7 @@ val get_safe : 'a t -> int -> 'a option
 
 val map_inplace : ('a -> 'a) -> 'a t -> unit
 (** [map_inplace f a] replace all elements of [a] by its image by [f].
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 val fold : ('a -> 'b -> 'a) -> 'a -> 'b t -> 'a
 (** [fold f init a] computes [f (… (f (f init a.(0)) a.(1)) …) a.(n-1)],
diff --git a/src/core/CCArrayLabels.mli b/src/core/CCArrayLabels.mli
index 735950f1a..9062fceec 100644
--- a/src/core/CCArrayLabels.mli
+++ b/src/core/CCArrayLabels.mli
@@ -61,7 +61,7 @@ val get_safe : 'a t -> int -> 'a option
 
 val map_inplace : f:('a -> 'a) -> 'a t -> unit
 (** [map_inplace ~f a] replace all elements of [a] by its image by [f].
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 val fold : f:('a -> 'b -> 'a) -> init:'a -> 'b t -> 'a
 (** [fold ~f ~init a] computes [f (… (f (f init a.(0)) a.(1)) …) a.(n-1)],
diff --git a/src/core/CCSeq.mli b/src/core/CCSeq.mli
index 6797048cf..63e974cd8 100644
--- a/src/core/CCSeq.mli
+++ b/src/core/CCSeq.mli
@@ -168,7 +168,7 @@ val unzip : ('a * 'b) t -> 'a t * 'b t
 
 val zip_i : 'a t -> (int * 'a) t
 (** [zip_i seq] zips the index of each element with the element itself.
-    @since NEXT
+    @since 3.8
 *)
 
 (** {2 Misc} *)
diff --git a/src/core/CCString.mli b/src/core/CCString.mli
index 0ece1ff16..72230bca1 100644
--- a/src/core/CCString.mli
+++ b/src/core/CCString.mli
@@ -327,16 +327,16 @@ val equal_caseless : string -> string -> bool
 
 val to_hex : string -> string
 (** Convert a string with arbitrary content into a hexadecimal string.
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 val of_hex : string -> string option
 (** Convert a string in hex into a string with arbitrary content.
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 val of_hex_exn : string -> string
 (** Same as {!of_hex} but fails harder.
     @raise Invalid_argument if the input is not valid hex.
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 (** {2 Finding}
 
diff --git a/src/core/CCStringLabels.mli b/src/core/CCStringLabels.mli
index 866b9e5a4..e5796b583 100644
--- a/src/core/CCStringLabels.mli
+++ b/src/core/CCStringLabels.mli
@@ -356,16 +356,16 @@ val equal_caseless : string -> string -> bool
 
 val to_hex : string -> string
 (** Convert a string with arbitrary content into a hexadecimal string.
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 val of_hex : string -> string option
 (** Convert a string in hex into a string with arbitrary content.
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 val of_hex_exn : string -> string
 (** Same as {!of_hex} but fails harder.
     @raise Invalid_argument if the input is not valid hex.
-    @since NEXT_RELEASE *)
+    @since 3.8 *)
 
 (** {2 Finding}