bump version number
diff --git a/lib/lua/Thrift.lua b/lib/lua/Thrift.lua
index 212359b..58daa22 100644
--- a/lib/lua/Thrift.lua
+++ b/lib/lua/Thrift.lua
@@ -48,7 +48,7 @@
   return count
 end
 
-version = '0.21.0'
+version = '0.22.0'
 
 TType = {
   STOP   = 0,