diff --git a/lbfgs.opam b/lbfgs.opam
index 87c638f..6fd66a1 100644
--- a/lbfgs.opam
+++ b/lbfgs.opam
@@ -18,7 +18,7 @@ depends: [
   "base-bigarray"
   "base-bytes"
   "dune" {>= "1.1"}
-  "dune-configurator"
+  "dune-configurator" {>= "3.0.2"}
   "cppo" {build}
   "conf-gfortran" {build}
   "lacaml" {with-test}