diff --git a/setup.py b/setup.py
index 5efb4fc8..e31715c5 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 
 setup(
     name="mashumaro",
-    version="2.11",
+    version="3.0",
     description="Fast serialization framework on top of dataclasses",
     long_description=open("README.md", encoding="utf8").read(),
     long_description_content_type="text/markdown",