diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2f4a9ad6..3a0bd462 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.7)
 
 project("SoftEther VPN"
-  VERSION 5.01.9665
+  VERSION 5.01.9666
   LANGUAGES C
 )
 
diff --git a/src/CurrentBuild.txt b/src/CurrentBuild.txt
index d448cca4..f6349a50 100644
--- a/src/CurrentBuild.txt
+++ b/src/CurrentBuild.txt
@@ -1,5 +1,5 @@
 VERSION_MAJOR 5
 VERSION_MINOR 1
-VERSION_BUILD 9665
+VERSION_BUILD 9666
 BUILD_NAME unstable
-BUILD_DATE 20181128_103328
+BUILD_DATE 20181204_041207