diff --git a/nix/default.nix b/nix/default.nix
index 58b34eb..684a6ae 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -9,7 +9,7 @@
 }:
 ocamlPackages.buildDunePackage {
   pname = "culr";
-  version = "0.1-${version}";
+  version = "0.1-vivid-${version}";
 
   minimalOCamlVersion = "5.2";