diff --git a/CHANGES.md b/CHANGES.md
index 26377e6a61..9031699ae3 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,8 @@
 ### 0.9.8
 
+* Fix missing zero padding for date pretty-printing (#228, @dsheets)
+* Update the tests to use `ocaml-git.1.6.0`
+* Improve the style of the HTTP commit graph.
 * Constraint the string tags to contain only alpha-numeric characters
   and few mores (`-`, `_` and `/`) (#186)
 * Fix a race condition in `Irmin.clone`. (#221)
diff --git a/lib/irmin.mli b/lib/irmin.mli
index 244e987244..e900b2d6e8 100644
--- a/lib/irmin.mli
+++ b/lib/irmin.mli
@@ -873,7 +873,7 @@ module Contents: sig
 
   module Cstruct: S with type t = Cstruct.t and module Path = Path.String_list
   (** Cstruct values where only the last modified value is kept on
-      merge. If the value has been modified concurrently, the [merge[
+      merge. If the value has been modified concurrently, the [merge]
       function raises [Conflict]. *)
 
   (** Contents store. *)
@@ -1577,6 +1577,7 @@ module Private: sig
                and type commit = S.key
 
   end
+
   (** The signature for slices. *)
   module Slice: sig
 
diff --git a/lib_test/test_store.ml b/lib_test/test_store.ml
index 5c72635c5a..e9098e4bd5 100644
--- a/lib_test/test_store.ml
+++ b/lib_test/test_store.ml
@@ -894,17 +894,25 @@ module Make (S: Irmin.S) = struct
         match !result with None -> assert false | Some t -> t
       in
       let clone () =
-        S.clone task (t "clone") (S.Tag.of_hum "test") >|= function
+        S.clone task (t "clone") (S.Tag.of_hum "test") >>= function
         | `Ok t ->
           begin match !result with
             | None   -> result := Some t
             | Some _ -> Alcotest.fail "should be duplicated!"
-          end
+          end;
+          Lwt.return_unit
         | `Duplicated_tag ->
-          begin match !result with
-          | None   -> Alcotest.fail "should not be duplicated!"
-          | Some _ -> ()
-          end
+          let rec wait n =
+            begin match !result with
+              | None   ->
+                if n <= 0 then Alcotest.fail "should not be duplicated!"
+                else
+                  Lwt_unix.sleep 0.1 >>= fun () ->
+                  wait (n-1)
+              | Some _ -> Lwt.return_unit
+            end
+          in
+          wait 10
         | `Empty_head -> Alcotest.fail "empty head"
       in
       S.remove_tag (t "prepare") (S.Tag.of_hum "test") >>= fun () ->