diff --git a/VERSION b/VERSION
index f0bb29e76..88c5fb891 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.3.0
+1.4.0
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index f752029b7..e74ddd0d0 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -48,9 +48,9 @@ import (
 
 const (
 	ClientIdentifier = "Geth"
-	Version          = "1.3.0-dev"
+	Version          = "1.4.0-unstable"
 	VersionMajor     = 1
-	VersionMinor     = 3
+	VersionMinor     = 4
 	VersionPatch     = 0
 )