diff --git a/lustre-v6.opam b/lustre-v6.opam
index 5926e22d2e62209e4af22612025de43ba76f92ee..0fc9c4cc428e894f8626d4f896a417d1f269e153 100644
--- a/lustre-v6.opam
+++ b/lustre-v6.opam
@@ -18,7 +18,7 @@ depends: [
   "lutils" {>= "1.49"}
   "dune"
   "ocamlfind"
-  "rdbg" {>= "1.184"}
+  "rdbg" {> "1.184"}
 ]
 build: [
   [make "build"]