diff --git a/ChangeLog b/ChangeLog
index 5a66f72..15cf2a5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2020-05-17  Xie Yanbo  <xieyanbo@gmail.com>
+
+    * release version 2.2.0
+    * add Debug If keyword
+    * rename libs' short name from l to ls to avoid conflict with command list
+
 2020-05-09  Xie Yanbo  <xieyanbo@gmail.com>
 
     * release version 2.1.0
diff --git a/DebugLibrary/version.py b/DebugLibrary/version.py
index 43082d4..8418bbc 100644
--- a/DebugLibrary/version.py
+++ b/DebugLibrary/version.py
@@ -1 +1 @@
-VERSION = '2.1.0'
+VERSION = '2.2.0'