diff --git a/.gitignore b/.gitignore
index 7621c2a..9e27294 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,5 +8,6 @@ demo/
 notebooks/mnt/
 docs/_build/
 dist/
+.venv
 
 hg/_version.py
diff --git a/pyproject.toml b/pyproject.toml
index c007d62..fd29587 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,6 +56,8 @@ fuse = [
 
 [tool.hatch.build]
 sources = ["src"]
+only-packages = true
+artifacts = ["src/higlass/widget.js"]
 
 [tool.hatch.version]
 source = "vcs"