diff --git a/pkgs/development/libraries/box2d/2.0.1.nix b/pkgs/development/libraries/box2d/2.0.1.nix
index c15e27695ac9..0d1f3bb14ee9 100644
--- a/pkgs/development/libraries/box2d/2.0.1.nix
+++ b/pkgs/development/libraries/box2d/2.0.1.nix
@@ -72,6 +72,7 @@ rec {
     platforms = with a.lib.platforms;
       linux;
     license = "bsd";
+    branch = "2.0.1";
   };
   passthru = {
     updateInfo = {