diff --git a/NEWS b/NEWS
index d3888a065..9d2c98dc7 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,5 @@
+ver 0.21.4 (not yet released)
+
 ver 0.21.3 (2018/11/16)
 * output
   - alsa: fix crash bug
diff --git a/doc/conf.py b/doc/conf.py
index 529131d43..cdb294411 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -38,7 +38,7 @@ author = 'Max Kellermann'
 # built documents.
 #
 # The short X.Y version.
-version = '0.21.3'
+version = '0.21.4'
 # The full version, including alpha/beta/rc tags.
 release = version
 
diff --git a/meson.build b/meson.build
index 8baa0c3ae..b232ed66e 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
   'mpd',
   ['c', 'cpp'],
-  version: '0.21.3',
+  version: '0.21.4',
   meson_version: '>= 0.47.2',
   default_options: [
     'c_std=c99',