diff --git a/src/data/CCIntMap.mli b/src/data/CCIntMap.mli
index c4a7901d..b0f7938f 100644
--- a/src/data/CCIntMap.mli
+++ b/src/data/CCIntMap.mli
@@ -67,8 +67,10 @@ val iter : (int -> 'a -> unit) -> 'a t -> unit
 val fold : (int -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'b
 
 val mapi : (int -> 'a -> 'b) -> 'a t -> 'b t
+(** @since NEXT_RELEASE *)
 
 val map : ('a -> 'b) -> 'a t -> 'b t
+(** @since NEXT_RELEASE *)
 
 val choose : 'a t -> (int * 'a) option
 
diff --git a/src/data/CCTrie.mli b/src/data/CCTrie.mli
index 5c49c1a5..5bbd8333 100644
--- a/src/data/CCTrie.mli
+++ b/src/data/CCTrie.mli
@@ -76,10 +76,14 @@ module type S = sig
   (** Fold on key/value bindings. Will use {!WORD.of_list} to rebuild keys. *)
 
   val mapi : (key -> 'a -> 'b) -> 'a t -> 'b t
-  (** Map values, giving both key and value. Will use {!WORD.of_list} to rebuild keys. *)
+  (** Map values, giving both key and value. Will use {!WORD.of_list} to rebuild keys.
+      @since NEXT_RELEASE
+   *)
 
   val map : ('a -> 'b) -> 'a t -> 'b t
-  (** Map values, giving only the value. *)
+  (** Map values, giving only the value.
+      @since NEXT_RELEASE
+    *)
 
   val iter : (key -> 'a -> unit) -> 'a t -> unit
   (** Same as {!fold}, but for effectful functions *)
diff --git a/src/data/CCWBTree.mli b/src/data/CCWBTree.mli
index a419de1b..8e64e08b 100644
--- a/src/data/CCWBTree.mli
+++ b/src/data/CCWBTree.mli
@@ -63,10 +63,14 @@ module type S = sig
   val fold : f:('b -> key -> 'a -> 'b) -> x:'b -> 'a t -> 'b
 
   val mapi : f:(key -> 'a -> 'b) -> 'a t -> 'b t
-  (** Map values, giving both key and value. Will use {!WORD.of_list} to rebuild keys. *)
+  (** Map values, giving both key and value. Will use {!WORD.of_list} to rebuild keys.
+      @since NEXT_RELEASE
+    *)
 
   val map : f:('a -> 'b) -> 'a t -> 'b t
-  (** Map values, giving only the value. *)
+  (** Map values, giving only the value.
+      @since NEXT_RELEASE
+    *)
 
   val iter : f:(key -> 'a -> unit) -> 'a t -> unit