diff --git a/CHANGES.rst b/CHANGES.rst
index 91465661..f21e4550 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -3,6 +3,16 @@ Changelog
 
 0.4.x
 ~~~~~
+Version 0.4.9
+-------------
+
+Released on November 27, 2019.
+
+- Fix unexpected data length in aio buffer transport, via `2-#102`_.
+
+.. _2-#102: https://github.com/Thriftpy/thriftpy2/pull/102
+
+
 Version 0.4.8
 -------------
 
diff --git a/thriftpy2/__init__.py b/thriftpy2/__init__.py
index 90c833a4..55428863 100644
--- a/thriftpy2/__init__.py
+++ b/thriftpy2/__init__.py
@@ -5,7 +5,7 @@
 from .hook import install_import_hook, remove_import_hook
 from .parser import load, load_module, load_fp
 
-__version__ = '0.4.8'
+__version__ = '0.4.9'
 __python__ = sys.version_info
 __all__ = ["install_import_hook", "remove_import_hook", "load", "load_module",
            "load_fp"]