diff --git a/src/tezos-deps.opam b/src/tezos-deps.opam
index 7035cbf16..002d6f6f0 100644
--- a/src/tezos-deps.opam
+++ b/src/tezos-deps.opam
@@ -23,7 +23,7 @@ depends: [
   "git"
   "git-unix"
   "irmin" {>= "1.3" }
-  "irmin-unix"
+  "irmin-unix" {>= "1.3" }
   "lwt" {>= "3.0.0" }
   "lwt_ssl"
   "menhir"