diff --git a/mpmaster/build.gradle b/mpmaster/build.gradle
index 1573690a..fe7a8031 100644
--- a/mpmaster/build.gradle
+++ b/mpmaster/build.gradle
@@ -4,7 +4,7 @@ plugins {
 
 def AppMajorVersion = 1
 def AppMinorVersion = 0
-def AppBuildNumber = 20
+def AppBuildNumber = 21
 
 def AppVersionName = AppMajorVersion + "." + AppMinorVersion + "." + AppBuildNumber
 def AppVersionCode = AppMajorVersion * 100000 + AppMinorVersion * 1000 + AppBuildNumber