diff --git a/pyproject.toml b/pyproject.toml
index b41797a..887dd04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "ablkit"
-version = "0.2.1"
+version = "0.2.2"
 authors = [
   { name="LAMDA 2024", email = "abductivelearning@gmail.com" },
 ]
@@ -14,7 +14,7 @@ requires-python = ">=3.7.0"
 license = {text = "MIT LICENSE"}
 keywords = ["machine-learning", "framework", "abductive-learning", "neuro-symbolic"]
 classifiers = [
-    "Development Status :: 4 - Beta",
+    "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Science/Research",
     "Intended Audience :: Developers",
     "License :: OSI Approved :: MIT License",