diff --git a/pyproject.toml b/pyproject.toml
index a8b66136..74d154a6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "chgnet"
-version = "0.3.8"
+version = "0.4.0"
 description = "Pretrained Universal Neural Network Potential for Charge-informed Atomistic Modeling"
 authors = [{ name = "Bowen Deng", email = "bowendeng@berkeley.edu" }]
 requires-python = ">=3.10"