diff --git a/pyproject.toml b/pyproject.toml
index c3d330d31c311d7887923cc7a0330d50c64cf2ce..8cd7b4aee0e186ce2c910dcf450770da134cdc23 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@
 
 [tool.setuptools]
     zip-safe = false
-    package-dir = {"" = "bob"}
+    packages = ["bob"]
 
 [tool.setuptools.dynamic]
     readme = {file = "README.rst"}