diff --git a/python/pyproject.toml b/python/pyproject.toml
index 613ff5b8d5..3daf4a4724 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "pylance"
 dynamic = ["version"]
-dependencies = ["pyarrow>=14", "numpy>=1.22", "lance-namespace>=0.6.1"]
+dependencies = ["pyarrow>=14", "numpy>=1.22", "lance-namespace>=0.6.1,<0.7"]
 description = "python wrapper for Lance columnar format"
 authors = [{ name = "Lance Devs", email = "dev@lance.org" }]
 license = { file = "LICENSE" }