diff --git a/ChangeLog b/ChangeLog
index 0c3cd515254361899406c3eadc7a35ba0247ab51..9b5ee5c35dbc9d10eb7cdcb92a94051bc1ebddb5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,5 @@
+Changes in version 0.0.10 - UNRELEASED:
+
 Changes in version 0.0.9 - 2019-02-05:
  - Various meek_lite code cleanups and bug fixes.
  - Bug 29077: uTLS for ClientHello camouflage (meek_lite).
diff --git a/obfs4proxy/obfs4proxy.go b/obfs4proxy/obfs4proxy.go
index 82dc4569558a17050840769272550de82d0b872d..014f8734baeba276dad73801ccf4a106185607b9 100644
--- a/obfs4proxy/obfs4proxy.go
+++ b/obfs4proxy/obfs4proxy.go
@@ -50,7 +50,7 @@ import (
 )
 
 const (
-	obfs4proxyVersion = "0.0.9"
+	obfs4proxyVersion = "0.0.10-dev"
 	obfs4proxyLogFile = "obfs4proxy.log"
 	socksAddr         = "127.0.0.1:0"
 )