diff --git a/Project.toml b/Project.toml
index cb447ba..94dd95a 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "QuantumStateBase"
 uuid = "73ce9c4f-35d1-4161-b9e6-26915895bfed"
 authors = ["JingYu Ning <foldfelis@gmail.com> and contributors"]
-version = "1.2.0"
+version = "1.2.1"
 
 [deps]
 ClassicalOrthogonalPolynomials = "b30e2e7b-c4ee-47da-9d5f-2c5c27239acd"