diff --git a/pyproject.toml b/pyproject.toml
index 3d04ecf..307f18d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -56,5 +56,4 @@ dxf = ["ezdxf~=1.0.2"]
 svg = ["svgwrite"]
 visualize = ["matplotlib"]
 text = ["matplotlib", "freetype-py"]
-python-gdsii = ["python-gdsii"]