diff --git a/Directory.Build.props b/Directory.Build.props
index dc07c15..ef1946c 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,7 +1,7 @@
 <Project>
 
   <PropertyGroup>
-    <VersionPrefix>2.1.0</VersionPrefix>
+    <VersionPrefix>2.2.0</VersionPrefix>
     <LangVersion>11.0</LangVersion>
     <Nullable>warnings</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index b33a278..b2f5090 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -1,5 +1,8 @@
 # Release Notes
 
+## 2.2.0
+* Add document symbol handler.
+
 ## 2.1.0
 * Fix definition handler for External members.
 * Add reference handler.