diff --git a/opam-graph.opam b/opam-graph.opam
index 8ab3aa8..f885b2e 100644
--- a/opam-graph.opam
+++ b/opam-graph.opam
@@ -9,7 +9,7 @@ license: "ISC"
 depends: [
   "ocaml" {>= "4.08.0"}
   "dune" {>= "2.0.0"}
-  "cmdliner"
+  "cmdliner" {>= "1.1.0"}
   "fmt" {>= "0.8.7"}
   "logs"
   "opam-core"