diff --git a/git-kv.opam b/git-kv.opam
index a239187..6e15412 100644
--- a/git-kv.opam
+++ b/git-kv.opam
@@ -11,6 +11,7 @@ depends: [
   "dune" {>= "2.0.0"}
   "git" {>= "3.9.0"}
   "mirage-kv" {>= "4.0.0"}
+  "git-unix"
   "ptime"
 ]