diff --git a/bind-9.11-rh1736762-5.patch b/bind-9.11-rh1736762-5.patch
new file mode 100644
index 0000000..e14efca
--- /dev/null
+++ b/bind-9.11-rh1736762-5.patch
@@ -0,0 +1,59 @@
+From 6257d829c9d7e71ac51bcdc6b5b981c7a19200e2 Mon Sep 17 00:00:00 2001
+From: Mark Andrews <marka@isc.org>
+Date: Mon, 25 Nov 2019 05:46:55 +0000
+Subject: [PATCH] Merge branch
+ '1373-threadsanitizer-data-race-rbtdb-c-5193-in-detachnode' into 'master'
+
+Resolve "ThreadSanitizer: data race rbtdb.c:5193 in detachnode"
+
+Closes #1373
+
+See merge request isc-projects/bind9!2598
+---
+ lib/dns/include/dns/rbt.h | 22 +++++++++-------------
+ 1 file changed, 9 insertions(+), 13 deletions(-)
+
+diff --git a/lib/dns/include/dns/rbt.h b/lib/dns/include/dns/rbt.h
+index 67ac3e4d8a..a084bd6193 100644
+--- a/lib/dns/include/dns/rbt.h
++++ b/lib/dns/include/dns/rbt.h
+@@ -49,10 +49,7 @@ ISC_LANG_BEGINDECLS
+ 
+ #define DNS_RBT_USEMAGIC 1
+ 
+-/*
+- * These should add up to 30.
+- */
+-#define DNS_RBT_LOCKLENGTH                      10
++#define DNS_RBT_LOCKLENGTH		(sizeof(((dns_rbtnode_t *)0)->locknum)*8)
+ #define DNS_RBT_REFLENGTH                       20
+ 
+ #define DNS_RBTNODE_MAGIC               ISC_MAGIC('R','B','N','O')
+@@ -159,16 +156,15 @@ struct dns_rbtnode {
+ 	 * separate region of memory.
+ 	 */
+ 	void *data;
+-	unsigned int :0;                /* start of bitfields c/o node lock */
+-	unsigned int dirty:1;
+-	unsigned int wild:1;
+-	unsigned int locknum:DNS_RBT_LOCKLENGTH;
+-#ifndef DNS_RBT_USEISCREFCOUNT
+-	unsigned int references:DNS_RBT_REFLENGTH;
+-#endif
+-	unsigned int :0;                /* end of bitfields c/o node lock */
++	uint8_t :0;                /* start of bitfields c/o node lock */
++	uint8_t dirty:1;
++	uint8_t wild:1;
++	uint8_t :0;                /* end of bitfields c/o node lock */
++	uint16_t locknum;	   /* note that this is not in the bitfield */
+ #ifdef DNS_RBT_USEISCREFCOUNT
+-	isc_refcount_t references; /* note that this is not in the bitfield */
++	isc_refcount_t references;
++#else
++	unsigned int references:DNS_RBT_REFLENGTH;
+ #endif
+ 	/*@}*/
+ };
+-- 
+2.21.0
+
diff --git a/bind.spec b/bind.spec
index e0522c6..e6659da 100644
--- a/bind.spec
+++ b/bind.spec
@@ -168,6 +168,7 @@ Patch179: bind-9.11-rh1736762-1.patch
 Patch180: bind-9.11-rh1736762-2.patch
 Patch181: bind-9.11-rh1736762-3.patch
 Patch182: bind-9.11-rh1736762-4.patch
+Patch183: bind-9.11-rh1736762-5.patch
 
 # SDB patches
 Patch11: bind-9.3.2b2-sdbsrc.patch
@@ -577,6 +578,7 @@ are used for building ISC DHCP.
 %patch180 -p1 -b .rh1736762-2
 %patch181 -p1 -b .rh1736762-3
 %patch182 -p1 -b .rh1736762-4
+%patch183 -p1 -b .rh1736762-5
 
 mkdir lib/dns/tests/testdata/dstrandom
 cp -a %{SOURCE50} lib/dns/tests/testdata/dstrandom/random.data