diff --git a/src/nxt_main.h b/src/nxt_main.h
index 3adf16b6..c1a64349 100644
--- a/src/nxt_main.h
+++ b/src/nxt_main.h
@@ -11,8 +11,8 @@
 #include <nxt_auto_config.h>
 
 
-#define NXT_VERSION                  "0.3"
-#define NXT_VERNUM                   3
+#define NXT_VERSION                  "0.4"
+#define NXT_VERNUM                   4
 
 
 typedef struct nxt_port_s            nxt_port_t;