diff --git a/dune-project b/dune-project
index 332aafd..56dad29 100644
--- a/dune-project
+++ b/dune-project
@@ -29,6 +29,7 @@
  (depends
   (ocaml
    (>= 4.13))
-  cmdliner
+  (cmdliner
+   (>= 1.1.0))
   directories
   scfg))
diff --git a/sun.opam b/sun.opam
index 8aa1c35..41a3101 100644
--- a/sun.opam
+++ b/sun.opam
@@ -12,7 +12,7 @@ bug-reports: "https://git.zapashcanon.fr/zapashcanon/sun/issues"
 depends: [
   "dune" {>= "2.9"}
   "ocaml" {>= "4.13"}
-  "cmdliner"
+  "cmdliner" {>= "1.1.0"}
   "directories"
   "scfg"
   "odoc" {with-doc}