new file mode 100644
@@ -0,0 +1,34 @@ 
+From 4b3a8f347179d7e2a1062eeed13a6474deb28728 Mon Sep 17 00:00:00 2001
+From: Chen Qi <Qi.Chen@windriver.com>
+Date: Thu, 16 Oct 2025 08:48:49 +0800
+Subject: [PATCH] Add clock group
+
+The clock group is needed to "to enable applications like linuxptp
+to open clocks without root privileges". See the link below:
+https://github.com/systemd/systemd/commit/af96ccfc24bc4803078a46b4ef2cdeb5decdfbcd
+
+Note that this group is needed as long as people use udev from
+systemd because 50-udev-default.rules needs it. See the above
+commit.
+
+Upstream-Status: Denied [https://salsa.debian.org/debian/base-passwd/-/merge_requests/17]
+
+Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
+---
+ group.master | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/group.master b/group.master
+index e54fd1d..6f84539 100644
+--- a/group.master
++++ b/group.master
+@@ -39,5 +39,6 @@ staff:*:50:
+ games:*:60:
+ shutdown:*:70:
+ wheel:*:80:
++clock:*:81:
+ users:*:100:
+ nogroup:*:65534:
+-- 
+2.34.1
+
@@ -13,6 +13,7 @@  SRC_URI = "https://launchpad.net/debian/+archive/primary/+files/${BPN}_${PV}.tar
            file://0005-Add-kvm-group.patch \
            file://0007-Add-wheel-group.patch \
            file://0001-base-passwd-Add-the-sgx-group.patch \
+           file://0001-Add-clock-group.patch \
            "
 
 SRC_URI[sha256sum] = "cf869870fed7862b57bfa9e99cd5cd6f365e2349705a1b65af7fc182629bd1ab"