diff --git a/configure.ac b/configure.ac
index 6912812b..3acc73e0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,7 +18,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 # 02110-1301, USA.
 
-AC_INIT([GNU tar], [1.21], [bug-tar@gnu.org])
+AC_INIT([GNU tar], [1.21.90], [bug-tar@gnu.org])
 AC_CONFIG_SRCDIR([src/tar.c])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([config.h:config.hin])