diff --git a/gpt.h b/gpt.h
index 81fd16c6c484c3af0c8e5328e51b578652e99c9a..876ecde912d799e0d914ec843246018d5ba1e37f 100644
--- a/gpt.h
+++ b/gpt.h
@@ -15,7 +15,7 @@
 #ifndef __GPTSTRUCTS
 #define __GPTSTRUCTS
 
-#define GPTFDISK_VERSION "0.6.4"
+#define GPTFDISK_VERSION "0.6.5-pre1"
 
 // Constants used by GPTData::PartsToMBR(). MBR_EMPTY must be the lowest-
 // numbered value to refer to partition numbers. (Most will be 0 or positive,