diff --git a/setup.py b/setup.py
index 5eaf7e5..936f938 100644
--- a/setup.py
+++ b/setup.py
@@ -104,7 +104,7 @@
 extra_deps['simulator'] = [
     'sortedcollections>=2.1.0,<3',
     'streamlit>=1.26.0,<2',
-    'altair>=5.1.1,<6',
+    'altair>=5.1.1,<7',
     'omegaconf>=2.3.0,<3',
     'PyYAML>=6.0,<7',
     'pandas>=2.0.3,<3',