diff --git a/configure.ac b/configure.ac
index b789d02d9..eafb165c5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -13,7 +13,7 @@ AM_SILENT_RULES
 AC_CONFIG_HEADERS(config.h)
 AC_CONFIG_MACRO_DIR([m4])
 
-AC_DEFINE(PROTOCOL_VERSION, "0.18.0", [The MPD protocol version])
+AC_DEFINE(PROTOCOL_VERSION, "0.19.0", [The MPD protocol version])
 
 
 dnl ---------------------------------------------------------------------------