diff --git a/pkgs/development/ocaml-modules/janestreet/janePackage_0_16.nix b/pkgs/development/ocaml-modules/janestreet/janePackage_0_16.nix
index 061fed447466..c1b2ed2a9139 100644
--- a/pkgs/development/ocaml-modules/janestreet/janePackage_0_16.nix
+++ b/pkgs/development/ocaml-modules/janestreet/janePackage_0_16.nix
@@ -1,4 +1,4 @@
-{ lib, fetchFromGitHub, buildDunePackage, defaultVersion ? "0.16" }:
+{ lib, fetchFromGitHub, buildDunePackage, defaultVersion ? "0.16.0" }:
 
 { pname
 , version ? defaultVersion