diff --git a/pyproject.toml b/pyproject.toml
index f7ca374..2a69dc5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
 ]
 dependencies = [
-    "pyiron_base==0.8.3"
+    "pyiron_base==0.9.11"
 ]
 dynamic = [ "version",]
 authors = [