diff --git a/RELEASE b/RELEASE
index c52317486e245fa13e8b2e0d55a6280b8624e68b..17c18c11e6286bec9aa0a35b1651d7e9204652e7 100644
--- a/RELEASE
+++ b/RELEASE
@@ -1,4 +1,15 @@
 
+0.4.18
+======
+
+Maintenance release:
+
+ - Important bugfix in reading constants from bytecode. (Tim-Philipp Müller
+   and Sebastian Dröge)
+ - Documentation and code cleanup (Stefan Sauer)
+ - Fix cache flushing on iOS (Andoni Morales Alastruey)
+
+
 0.4.17
 ======
 
diff --git a/configure.ac b/configure.ac
index 5f5f9842771e3ef9702dc83c0cd1b4bfacd39c6f..a396b053ba11f2c0190106840d535f5962d3bc32 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_PREREQ([2.58])
-AC_INIT(orc,0.4.17.1)
+AC_INIT(orc,0.4.18)
 dnl don't forget to update libversion
 
 AS_NANO(ORC_GIT=no,ORC_GIT=yes)
@@ -17,7 +17,7 @@ dnl - library source changed -> increment REVISION
 dnl - interfaces added/removed/changed -> increment CURRENT, REVISION = 0
 dnl - interfaces added -> increment AGE
 dnl - interfaces removed -> AGE = 0
-ORC_LIBVERSION="17:0:17"
+ORC_LIBVERSION="18:0:18"
 AC_SUBST(ORC_LIBVERSION)
 AC_LIBTOOL_WIN32_DLL
 AC_LIBTOOL_TAGS([])