diff --git a/configure.ac b/configure.ac
index 1a38ec8..a1dd367 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,8 +24,8 @@
 #
 
 AC_PREREQ(2.60)
-AC_INIT([xerces-c],[3.2.3])
-INTERFACE_VERSION=3.2
+AC_INIT([xerces-c],[3.3.0])
+INTERFACE_VERSION=3.3
 GRAMMAR_SERIALIZATION_LEVEL=7
 
 XERCES_VERSION_MAJOR=$(echo $PACKAGE_VERSION | cut -d. -f1)