diff --git a/pyproject.toml b/pyproject.toml
index 4e007b4..ad946f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ requires = [
     "xtrack==0.57.0",
     "xfields==0.15.1",
     "xcoll==0.3.5",
-    "xobjects==0.4.0",
+    "xobjects==0.4.1",
 ]
 build-backend = "setuptools.build_meta"
 
@@ -22,7 +22,7 @@ dependencies = [
     "xtrack==0.57.0",
     "xfields==0.15.1",
     "xcoll==0.3.5",
-    "xobjects==0.4.0",
+    "xobjects==0.4.1",
 ]
 dynamic = ["version"]