diff --git a/Source/sys-clk-OC/overlay/Makefile b/Source/sys-clk-OC/overlay/Makefile
index 9b68990e..1bdc05b5 100644
--- a/Source/sys-clk-OC/overlay/Makefile
+++ b/Source/sys-clk-OC/overlay/Makefile
@@ -32,7 +32,7 @@ NO_ICON		:=	1
 #---------------------------------------------------------------------------------
 # version control constants
 #---------------------------------------------------------------------------------
-TARGET_VERSION	:= 1.8.0
+TARGET_VERSION	:= 1.8.1
 APP_VERSION		:= $(TARGET_VERSION)
 
 #---------------------------------------------------------------------------------
diff --git a/Source/sys-clk-OC/sysmodule/Makefile b/Source/sys-clk-OC/sysmodule/Makefile
index d3984374..1d4040af 100644
--- a/Source/sys-clk-OC/sysmodule/Makefile
+++ b/Source/sys-clk-OC/sysmodule/Makefile
@@ -30,7 +30,7 @@ LIBNAMES	:=	minIni nxExt
 #---------------------------------------------------------------------------------
 # version control constants
 #---------------------------------------------------------------------------------
-TARGET_VERSION	:= 1.8.0
+TARGET_VERSION	:= 1.8.1
 
 #---------------------------------------------------------------------------------
 # options for code generation