diff --git a/fix-tests-for-tornado-6.5.patch b/fix-tests-for-tornado-6.5.patch
new file mode 100644
index 0000000000000000000000000000000000000000..4c2a1df6214b770f90dd6f2f2f025474619ed98c
--- /dev/null
+++ b/fix-tests-for-tornado-6.5.patch
@@ -0,0 +1,25 @@
+From 330a7cd9f57109440f4bb7593a7738274a8aa5f5 Mon Sep 17 00:00:00 2001
+From: Miroslav Lisik <mlisik@redhat.com>
+Date: Fri, 16 May 2025 13:30:04 +0200
+Subject: [PATCH] fix tests for tornado-6.5
+
+* since tornado-6.5, the host value for HTTPServerRequest should come
+  from http header 'Host'
+* https://www.tornadoweb.org/en/stable/releases/v6.5.0.html#tornado-httputil
+* https://github.com/tornadoweb/tornado/commit/4ce700affdd23631a0514d1a0460c0854b0687fe
+---
+ pcs_test/tier0/daemon/test_ruby_pcsd.py | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/pcs_test/tier0/daemon/test_ruby_pcsd.py b/pcs_test/tier0/daemon/test_ruby_pcsd.py
+index 604a33d85..a8559cd55 100644
+--- a/pcs_test/tier0/daemon/test_ruby_pcsd.py
++++ b/pcs_test/tier0/daemon/test_ruby_pcsd.py
+@@ -37,7 +37,6 @@ def create_http_request():
+         uri="/pcsd/uri",
+         headers=HTTPHeaders({"Cookie": "cookie1=first;cookie2=second"}),
+         body=str.encode(urlencode({"post-key": "post-value"})),
+-        host="pcsd-host:2224",
+     )
+ 
+ 
diff --git a/pcs.spec b/pcs.spec
index 07c4225ef2ce880f43e70db69938442cae620942..95d06c11eb6505a087063688c6e8b6ba4c9d23a1 100644
--- a/pcs.spec
+++ b/pcs.spec
@@ -1,6 +1,6 @@
 Name:    pcs
 Version: 0.11.7
-Release: 15
+Release: 16
 License: GPL-2.0-only AND Apache-2.0 AND MIT AND BSD-3-Clause AND (BSD-2-Clause OR Ruby) AND (BSD-2-Clause OR GPL-2.0-or-later)
 URL:     https://github.com/ClusterLabs/pcs
 Group: System Environment/Base
@@ -52,6 +52,9 @@ Patch12: backport-fix-booth-destroy-for-arbitrators.patch
 # ui patches: >200
 # Patch201: bzNUMBER-01-name.patch
 
+# fix tests for tornado-6.5
+Patch13: fix-tests-for-tornado-6.5.patch
+
 BuildRequires: make
 # printf from coreutils is used in makefile, head is used in spec
 BuildRequires: coreutils
@@ -409,6 +412,9 @@ run_all_tests
 %license pyagentx_LICENSE.txt
 
 %changelog
+* Wed May 21 2025 fengxueyan <fengxy@teligen.net> - 0.11.7-16
+- fix tests for tornado-6.5
+
 * Mon Sep 02 2024 zouzhimin <zouzhimin@kylinos.cn> - 0.11.7-15
 - fix booth destroy for arbitrators