diff --git a/pyproject.toml b/pyproject.toml
index 47b7d6d..a15984a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ dependencies = [
   "plotly",
   "pandas",
   "control",
-  "sdof",
+#  "sdof",
 # "opensees",
   "quakeio",
   "ipykernel"