diff --git a/variables.h b/variables.h
index 1c1957f4..c6255a9f 100644
--- a/variables.h
+++ b/variables.h
@@ -17,7 +17,7 @@
 #ifndef _VARIABLES_HEADER_
 #define _VARIABLES_HEADER_
 
-#define TW_VERSION_STR              "2.8.0.0"
+#define TW_VERSION_STR              "2.8.1.0"
 
 #define TW_USE_COMPRESSION_VAR      "tw_use_compression"
 #define TW_FILENAME                 "tw_filename"