diff --git a/NEWS b/NEWS
index 3824466ac..583c8853d 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,5 @@
+ver 0.21 (not yet released)
+
 ver 0.20.3 (2017/01/25)
 * protocol
   - "playlistadd" creates new playlist if it does not exist, as documented
diff --git a/configure.ac b/configure.ac
index a273f8bd9..ea4daf7ee 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,10 +1,10 @@
 AC_PREREQ(2.60)
 
-AC_INIT(mpd, 0.20.3, musicpd-dev-team@lists.sourceforge.net)
+AC_INIT(mpd, 0.21, musicpd-dev-team@lists.sourceforge.net)
 
 VERSION_MAJOR=0
-VERSION_MINOR=20
-VERSION_REVISION=3
+VERSION_MINOR=21
+VERSION_REVISION=0
 VERSION_EXTRA=0
 
 AC_CONFIG_SRCDIR([src/Main.cxx])