diff --git a/pyproject.toml b/pyproject.toml
index 0f17fd0..7c3705f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -60,7 +60,7 @@ non_interactive = true
 exclude = ["env", "venv", "build"]
 
 [tool.setuptools.packages.find]
-include = ["httptoolkit.*"]
+include = ["httptoolkit.*", "httptoolkit"]
 
 [tool.setuptools.dynamic]
 version = {attr = "httptoolkit._version.__version__"}