diff --git a/lustre/autoconf/lustre-version.ac b/lustre/autoconf/lustre-version.ac
index 5eee07bd92e16998bd59c4bbe5797f619bce8fba..52ec872c1e3c5baa12e8ee03c1c32b9f2aaafbb9 100644
--- a/lustre/autoconf/lustre-version.ac
+++ b/lustre/autoconf/lustre-version.ac
@@ -1,7 +1,7 @@
 m4_define([LUSTRE_MAJOR],[1])
 m4_define([LUSTRE_MINOR],[6])
 m4_define([LUSTRE_PATCH],[0])
-m4_define([LUSTRE_FIX],[90])
+m4_define([LUSTRE_FIX],[91])
 
 dnl # liblustre delta is 0.0.1.32 , next version with fixes is ok, but
 dnl # after following release candidate/beta would spill this warning already.