1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/update-copyright/default.nix b/nixpkgs/pkgs/development/python-modules/update-copyright/default.nix
index 1502e92f9e7b..2abb9945ece2 100644
--- a/nixpkgs/pkgs/development/python-modules/update-copyright/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/update-copyright/default.nix
@@ -17,6 +17,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "An automatic copyright update tool";
+    mainProgram = "update-copyright.py";
     homepage = "http://blog.tremily.us/posts/update-copyright";
     license = licenses.gpl3;
   };