diff --git a/lustre/autoconf/lustre-version.ac b/lustre/autoconf/lustre-version.ac
index 679eaa01eae2a86b624d67fe1416fa2a8a4e3b00..21c038a8d6776a7fbe472dd2d18cf6726aa73a1e 100644
--- a/lustre/autoconf/lustre-version.ac
+++ b/lustre/autoconf/lustre-version.ac
@@ -1,6 +1,6 @@
 m4_define([LUSTRE_MAJOR],[1])
 m4_define([LUSTRE_MINOR],[9])
-m4_define([LUSTRE_PATCH],[90])
+m4_define([LUSTRE_PATCH],[100])
 m4_define([LUSTRE_FIX],[0])
 
 dnl # don't forget to update the service tags info