diff '--color=auto' -Naur a/pyproject.toml b/pyproject.toml
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -170,6 +170,7 @@
 #
 # Find all (sub-)modules of the Python package
 [tool.setuptools.packages.find]
+exclude = ["docs", "tests"]
 
 [tool.setuptools.dynamic]
 version = {attr = 'sphinxcontrib.katex.__version__'}