diff --git a/pyproject.toml b/pyproject.toml
index 3514e40..1bba1fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -102,13 +102,28 @@ include = ['deepecho', 'deepecho.*']
 namespaces = false
 
 [tool.setuptools.package-data]
-"" = ["AUTHORS.rst", "CONTRIBUTING.rst", "HISTORY.md", "README.md", "*.md", "*.rst", "conf.py", "Makefile", "make.bat", "*.jpg", "*.png", "*.gif"]
+"*" = [
+    "AUTHORS.rst",
+    "CONTRIBUTING.rst",
+    "HISTORY.md",
+    "README.md",
+    "*.md",
+    "*.rst",
+    "conf.py",
+    "Makefile",
+    "make.bat",
+    "*.jpg",
+    "*.png",
+    "*.gif"
+]
 "deepecho" = ["data/demo.csv"]
 "tests" = ["*"]
 
 [tool.setuptools.exclude-package-data]
-"" = ["*.pyc", "*.pyo", "__pycache__"]
-
+"*" = [
+    "* __pycache__",
+    "*.py[co]",
+]
 
 [tool.setuptools.dynamic]
 version = {attr = 'deepecho.__version__'}