diff --git a/pyproject.toml b/pyproject.toml
index a16724b..ffdbabb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,6 +7,7 @@ license = "MIT"
 readme = "README.rst"
 homepage = "https://github.com/makenew/pypackage"
 repository = "https://github.com/makenew/pypackage"
+exclude = ["**/*_test.py"]
 
 [tool.poetry.dependencies]
 python = "^3.11.0"