1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/pyupgrade/default.nix b/nixpkgs/pkgs/development/python-modules/pyupgrade/default.nix
index 8d5bc83ed165..04ccee1bc757 100644
--- a/nixpkgs/pkgs/development/python-modules/pyupgrade/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/pyupgrade/default.nix
@@ -34,6 +34,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Tool to automatically upgrade syntax for newer versions of the language";
+    mainProgram = "pyupgrade";
     homepage = "https://github.com/asottile/pyupgrade";
     license = licenses.mit;
     maintainers = with maintainers; [ lovesegfault ];