--- config_office/configure.in
+++ config_office/configure.in
@@ -3147,7 +3147,7 @@
         ], []
     )
     AC_MSG_CHECKING([whether db is at least 4.1])
-    for v in 1 2 3 4 5; do
+    for v in 1 2 3 4 5 6; do
        AC_TRY_RUN([
 #include <db.h>