diff --git a/dune-project b/dune-project
index 75eb850..5e0c97a 100644
--- a/dune-project
+++ b/dune-project
@@ -26,7 +26,7 @@
  (depends
    (ocaml (>= 4.05))
    (trace (= :version))
-   mtime
+   (mtime (>= 2.0))
    base-unix
    dune)
  (tags