diff --git a/include/spdk/version.h b/include/spdk/version.h
index 6fac73a59..c04c1b0f4 100644
--- a/include/spdk/version.h
+++ b/include/spdk/version.h
@@ -46,7 +46,7 @@
 /**
  * Minor version number (month of original release).
  */
-#define SPDK_VERSION_MINOR	1
+#define SPDK_VERSION_MINOR	4
 
 /**
  * Patch level.
@@ -59,7 +59,7 @@
 /**
  * Version string suffix.
  */
-#define SPDK_VERSION_SUFFIX	""
+#define SPDK_VERSION_SUFFIX	"-pre"
 
 /**
  * Single numeric value representing a version number for compile-time comparisons.