diff --git a/pyproject.toml b/pyproject.toml
index f3621f7..b600bf6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ classifiers = [
   "Operating System :: OS Independent"
 ]
 dependencies = [
-  "kfactory==0.8.4",
+  "kfactory==0.9.0",
   "scipy"
 ]
 description = "Kfactory generic PDK"