diff --git a/cyrus-imapd-2.3.12p2-db4.7.patch b/cyrus-imapd-2.3.12p2-db4.7.patch
new file mode 100644
index 0000000..89e0936
--- /dev/null
+++ b/cyrus-imapd-2.3.12p2-db4.7.patch
@@ -0,0 +1,11 @@
+--- cyrus-imapd-2.3.12p2/cmulocal/berkdb.m4.orig	2008-09-12 07:46:46.000000000 +0200
++++ cyrus-imapd-2.3.12p2/cmulocal/berkdb.m4	2008-09-12 07:47:10.000000000 +0200
+@@ -213,7 +213,7 @@ AC_DEFUN([CYRUS_BERKELEY_DB_CHK_LIB],
+ 	fi
+ 
+ 	saved_LIBS=$LIBS
+-        for dbname in ${with_bdb} db-4.6 db4.6 db46 db-4.5 db4.5 db45 db-4.4 db4.4 db44 db-4.3 db4.3 db43 db-4.2 db4.2 db42 db-4.1 db4.1 db41 db-4.0 db4.0 db-4 db40 db4 db-3.3 db3.3 db33 db-3.2 db3.2 db32 db-3.1 db3.1 db31 db-3 db30 db3 db
++        for dbname in ${with_bdb} db-4.7 db4.7 db47 db-4.6 db4.6 db46 db-4.5 db4.5 db45 db-4.4 db4.4 db44 db-4.3 db4.3 db43 db-4.2 db4.2 db42 db-4.1 db4.1 db41 db-4.0 db4.0 db-4 db40 db4 db-3.3 db3.3 db33 db-3.2 db3.2 db32 db-3.1 db3.1 db31 db-3 db30 db3 db
+           do
+ 	    LIBS="$saved_LIBS -l$dbname"
+ 	    AC_TRY_LINK([#include <stdio.h>