diff --git a/src/util.h b/src/util.h
index 12fd044..9341b0c 100644
--- a/src/util.h
+++ b/src/util.h
@@ -34,8 +34,8 @@
 
 namespace p2pool {
 
-#define P2POOL_VERSION_MAJOR 3
-#define P2POOL_VERSION_MINOR 10
+#define P2POOL_VERSION_MAJOR 4
+#define P2POOL_VERSION_MINOR 0
 #define P2POOL_VERSION_PATCH 0
 
 constexpr uint32_t P2POOL_VERSION = (P2POOL_VERSION_MAJOR << 16) | (P2POOL_VERSION_MINOR << 8) | P2POOL_VERSION_PATCH;