diff --git a/xt/verify-yarnlock.t b/xt/verify-yarnlock.t
new file mode 100755
index 0000000000..088495c9d8
--- /dev/null
+++ b/xt/verify-yarnlock.t
@@ -0,0 +1,45 @@
+#!/usr/bin/perl
+
+# Copyright (C) 2024 KohaAloha Ltd.
+#
+# This file is part of Koha.
+#
+# Koha is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# Koha is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Koha; if not, see <http://www.gnu.org/licenses>.
+
+# This file tests that Koha's yarn.lock file is updated with the
+# packages.json file. If this test fails, the likely solution is to run
+# 'yarn install' to generate an updated yarn.lock file, then
+# 'git commit ./yarn.lock'.
+
+use Modern::Perl;
+use Test::More tests => 1;
+
+my $rc;
+
+# if KTD dirs exists?
+if ( -d "/usr/local/share/.cache/yarn" and -d "/kohadevbox/node_modules" ) {
+
+    # we use KTD's existing .cache/yarn and node_modules dirs
+    $rc = system("yarn check  --modules-folder /kohadevbox/node_modules  --cache-dir /usr/local/share/.cache/yarn");
+
+} else {
+
+    # else, we just use yarn's currently set dirs
+    $rc = system("yarn check");
+
+}
+
+# yarn returns a 256 value for this specific lockfile error,
+#  but we assume any non-zero value is bad
+is( $rc, 0, "verify yarn.lock file is updated correctly" );