diff --git a/pkgs/development/python-modules/alembic/default.nix b/pkgs/development/python-modules/alembic/default.nix
index c1bb0f1d3c7d..36a6bb79bc27 100644
--- a/pkgs/development/python-modules/alembic/default.nix
+++ b/pkgs/development/python-modules/alembic/default.nix
@@ -47,5 +47,6 @@ buildPythonPackage rec {
     description = "A database migration tool for SQLAlchemy";
     license = licenses.mit;
     maintainers = with maintainers; [ ];
+    mainProgram = "alembic";
   };
 }