diff --git a/chrony-124-tai.patch b/chrony-124-tai.patch
new file mode 100644
index 0000000..5198fe4
--- /dev/null
+++ b/chrony-124-tai.patch
@@ -0,0 +1,30 @@
+From 8f5b3084144967b313cfb51285bf6517e06e1b9e Mon Sep 17 00:00:00 2001
+From: Miroslav Lichvar <mlichvar@redhat.com>
+Date: Tue, 4 Jun 2024 16:23:41 +0200
+Subject: [PATCH] test: make 124-tai more reliable
+
+Reported-by: Reinhard Max <max@suse.de>
+---
+ test/simulation/124-tai | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- test/simulation/124-tai.orig
++++ test/simulation/124-tai
+@@ -20,7 +20,7 @@ client_conf="
+ refclock SHM 0 dpoll 0 poll 0 tai
+ leapsectz right/UTC
+ leapsecmode ignore
+-maxchange 1e-3 1 0"
++maxchange 1e-3 10 0"
+ 
+ run_test || test_fail
+ check_chronyd_exit || test_fail
+@@ -35,7 +35,7 @@ client_conf="
+ refclock SHM 0 dpoll 0 poll 0 tai
+ leapsectz right/UTC
+ makestep 1 1
+-maxchange 1e-3 1 0"
++maxchange 1e-3 10 0"
+ 
+ run_test || test_fail
+ check_chronyd_exit || test_fail
diff --git a/chrony.changes b/chrony.changes
index b015acc..bdcb1b8 100644
--- a/chrony.changes
+++ b/chrony.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Tue Jun  4 14:57:09 UTC 2024 - Reinhard Max <max@suse.com>
+
+- bsc#1225362, chrony-124-tai.patch: make 124-tai more reliable
+
+-------------------------------------------------------------------
+Mon May 27 15:34:40 UTC 2024 - Reinhard Max <max@suse.com>
+
+- Update clknetsim to snapshot 0a11a35.
+
 -------------------------------------------------------------------
 Mon Feb 26 10:33:53 UTC 2024 - Dominique Leuenberger <dimstar@opensuse.org>
 
diff --git a/chrony.spec b/chrony.spec
index f2275e5..b0ee217 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -33,7 +33,7 @@
 %bcond_without testsuite
 
 %define _systemdutildir %(pkg-config --variable systemdutildir systemd)
-%global clknetsim_ver 5d1dc05
+%global clknetsim_ver 0a11a35
 #Compat macro for new _fillupdir macro introduced in Nov 2017
 %if ! %{defined _fillupdir}
   %define _fillupdir %{_localstatedir}/adm/fillup-templates
@@ -70,6 +70,7 @@ Patch2:         chrony-logrotate.patch
 Patch3:         chrony-service-ordering.patch
 Patch7:         chrony-htonl.patch
 Patch8:         chrony.nm-dispatcher.dhcp.patch
+Patch9:         chrony-124-tai.patch
 BuildRequires:  NetworkManager-devel
 BuildRequires:  bison
 BuildRequires:  findutils
@@ -181,6 +182,7 @@ e.g. because the servers will be set via DHCP.
 %patch -P 3
 %patch -P 7
 %patch -P 8
+%patch -P 9
 
 # Remove pool statements from the default /etc/chrony.conf. They will
 # be provided by branding packages in /etc/chrony.d/pool.conf .
diff --git a/clknetsim-0a11a35.tar.gz b/clknetsim-0a11a35.tar.gz
new file mode 100644
index 0000000..848705a
--- /dev/null
+++ b/clknetsim-0a11a35.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5ef3d546932c7b848109474f782bd0c0a54b6dff9c199c7d524d535972b112b2
+size 51432
diff --git a/clknetsim-5d1dc05.tar.gz b/clknetsim-5d1dc05.tar.gz
deleted file mode 100644
index 6abbd73..0000000
--- a/clknetsim-5d1dc05.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:26ffb69047e1839ec7bdd92bc55140a31edb2d8b6d97fbb6f19e1c9ccf601d99
-size 51356