diff --git a/pyproject.toml b/pyproject.toml
index 4f45926..3dffe07 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -52,6 +52,7 @@ Issues = "https://github.com/bkrabach/muxplex/issues"
 
 [tool.hatch.build.targets.wheel]
 packages = ["muxplex"]
+exclude = ["muxplex/tests", "muxplex/frontend/tests"]
 
 [tool.pytest.ini_options]
 testpaths = ["muxplex/tests"]