diff --git a/CHANGES.md b/CHANGES.md
index d4d9577a7..5dfdf82fe 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,9 @@
+# 1.10.3
+
+## Fixes
+
+- Fix more debouncing bugs (#629)
+
 # 1.10.2
 
 ## Fixes
diff --git a/ocaml-lsp-server/src/ocaml_lsp_server.ml b/ocaml-lsp-server/src/ocaml_lsp_server.ml
index 53195f692..6659eab13 100644
--- a/ocaml-lsp-server/src/ocaml_lsp_server.ml
+++ b/ocaml-lsp-server/src/ocaml_lsp_server.ml
@@ -160,7 +160,7 @@ let set_diagnostics rpc doc =
       task_if_running state.detached ~f:(fun () ->
           let timer = Document.timer doc in
           let* () = Lev_fiber.Timer.Wheel.cancel timer in
-          Lev_fiber.Timer.Wheel.reset timer;
+          let* () = Lev_fiber.Timer.Wheel.reset timer in
           let* res = Lev_fiber.Timer.Wheel.await timer in
           match res with
           | `Cancelled -> Fiber.return ()
diff --git a/submodules/lev b/submodules/lev
index d9cda0df0..9ce6b0fbb 160000
--- a/submodules/lev
+++ b/submodules/lev
@@ -1 +1 @@
-Subproject commit d9cda0df0290e0f1daaf239be2eee2b993d4ee61
+Subproject commit 9ce6b0fbbc362f934edef283e9b3b6708267bab9