diff --git a/HISTORY.rst b/HISTORY.rst
index 674c6881..13e5cb01 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -1,3 +1,13 @@
+======================
+ What's new in 2.2.0
+======================
+
+Release: TBD
+
+* Use ``pkg-config`` instead of ``mysql_config`` (#586)
+
+
+
 ======================
  What's new in 2.1.1
 ======================
diff --git a/metadata.cfg b/metadata.cfg
index 4d5e0174..87ebc6c5 100644
--- a/metadata.cfg
+++ b/metadata.cfg
@@ -1,7 +1,7 @@
 [metadata]
 name: mysqlclient
-version: 2.1.2
-version_info: (2,1,2,'dev',0)
+version: 2.2.0dev0
+version_info: (2,2,0,'dev',0)
 description: Python interface to MySQL
 author: Inada Naoki
 author_email: songofacandy@gmail.com