diff --git a/version.h b/version.h
index d52b141..ca6ce8f 100644
--- a/version.h
+++ b/version.h
@@ -24,8 +24,8 @@
 
 #define VER_MAJOR       "1"
 #define VER_MINOR       "3"
-#define VER_REV         "4"
-#define VERSION_DATE    "20180404"
+#define VER_REV         "5"
+#define VERSION_DATE    "20180521"
 
 #if defined(ZUMSPOT_ADF7021)
 #define BOARD_INFO      "ZUMspot"