diff --git a/pyproject.toml b/pyproject.toml
index 2a5a42e..9e6d1a8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ readme = "README.md"
 requires-python = ">=3.10"
 
 [tool.setuptools.packages.find]
-where = ["xchemalign"]
+where = ["src/xchemalign"]
 
 [project.optional-dependencies]
 dev = [