diff --git a/package/openldap/0001-fix-bignum.patch b/package/openldap/0001-fix-bignum.patch
index ec38ee3df0..1c71cd3165 100644
--- a/package/openldap/0001-fix-bignum.patch
+++ b/package/openldap/0001-fix-bignum.patch
@@ -11,11 +11,13 @@ So, keep the check for the bignum header, but check against ol_link_tls
 which means that openssl is enabled when we find the bignum headers.
 
 Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
+[Bernd: rebased for 2.6.13]
+Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
 
 diff -durN openldap-2.4.40.orig/configure openldap-2.4.40/configure
 --- openldap-2.4.40.orig/configure	2014-09-19 03:48:49.000000000 +0200
 +++ openldap-2.4.40/configure	2015-01-25 18:44:54.216879362 +0100
-@@ -23431,7 +23431,7 @@
+@@ -25367,7 +25367,7 @@
  
  	if test "$ac_cv_header_openssl_bn_h" = "yes" &&
  		test "$ac_cv_header_openssl_crypto_h" = "yes" &&
@@ -23,10 +25,10 @@ diff -durN openldap-2.4.40.orig/configure openldap-2.4.40/configure
 +		test "$ol_link_tls" = "yes" ; then
  		ol_with_mp=bignum
  
- $as_echo "#define USE_MP_BIGNUM 1" >>confdefs.h
+ printf "%s\n" "#define USE_MP_BIGNUM 1" >>confdefs.h
 --- openldap-2.5.15.orig/configure.ac	2023-10-23 11:03:46.292215101 +0200
 +++ openldap-2.5.16/configure.ac	2023-10-23 11:05:07.245355497 +0200
-@@ -2323,7 +2323,7 @@
+@@ -2327,7 +2327,7 @@
  	AC_CHECK_HEADERS(openssl/crypto.h)
  	if test "$ac_cv_header_openssl_bn_h" = "yes" &&
  		test "$ac_cv_header_openssl_crypto_h" = "yes" &&
diff --git a/package/openldap/openldap.hash b/package/openldap/openldap.hash
index 69c3e978b1..de2fee536f 100644
--- a/package/openldap/openldap.hash
+++ b/package/openldap/openldap.hash
@@ -1,5 +1,5 @@
 # Verified by locally checking against the SHA3-512 hash available in
-# https://www.openldap.org/software/download/OpenLDAP/openldap-release/openldap-2.5.19.sha3-512
+# https://www.openldap.org/software/download/OpenLDAP/openldap-release/openldap-2.6.13.sha3-512
 # Locally computed
-sha256  56e2936c7169aa7547cfc93d5c87db46aa05e98dee6321590c3ada92e1fbb66c  openldap-2.5.19.tgz
+sha256  d693b49517a42efb85a1a364a310aed16a53d428d1b46c0d31ef3fba78fcb656  openldap-2.6.13.tgz
 sha256  310fe25c858a9515fc8c8d7d1f24a67c9496f84a91e0a0e41ea9975b1371e569  LICENSE
diff --git a/package/openldap/openldap.mk b/package/openldap/openldap.mk
index da67562a40..6d30a22f54 100644
--- a/package/openldap/openldap.mk
+++ b/package/openldap/openldap.mk
@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-OPENLDAP_VERSION = 2.5.19
+OPENLDAP_VERSION = 2.6.13
 OPENLDAP_SOURCE = openldap-$(OPENLDAP_VERSION).tgz
 OPENLDAP_SITE = https://www.openldap.org/software/download/OpenLDAP/openldap-release
 OPENLDAP_LICENSE = OpenLDAP Public License