diff --git a/haco/pyproject.toml b/haco/pyproject.package.toml
similarity index 100%
rename from haco/pyproject.toml
rename to haco/pyproject.package.toml
diff --git a/pyproject.toml b/pyproject.toml
index 4512fc2..65e8441 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,7 +36,7 @@ include = ["haco*"]
 namespaces = false
 
 [tool.setuptools.package-data]
-haco = ["pyproject.toml"]
+haco = ["pyproject.package.toml"]
 
 [tool.uv.sources.corio]
 path = "../corio"