diff --git a/pyproject.toml b/pyproject.toml
index e0873ac76..788e64e46 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,6 +62,9 @@ repository = "https://github.com/normal-computing/outlines"
 file="README.md"
 content-type = "text/markdown"
 
+[tool.setuptools]
+packages = ["outlines"]
+
 [tool.setuptools_scm]
 write_to = "outlines/_version.py"