diff --git a/packages/tar-mirage.2.1.99~dev/opam b/packages/tar-mirage.2.1.99~dev/opam
index 8ccae29..1fbefd3 100644
--- a/packages/tar-mirage.2.1.99~dev/opam
+++ b/packages/tar-mirage.2.1.99~dev/opam
@@ -19,7 +19,7 @@ depends: [
   "cstruct" {>= "1.9.0"}
   "lwt" {>= "5.6.0"}
   "mirage-block" {>= "2.0.0"}
-  "mirage-kv" {>= "3.0.0" & < "5.0.0"}
+  "mirage-kv" {>= "5.0.0"}
   "ptime"
   "tar" {= version}
   "mirage-block-unix" {with-test & >= "2.5.0"}