--- bind-9.20.26/tests/dns/update_test.c	2026-07-20 16:47:54.262853056 +0200
+++ bind-9.20.26/tests/dns/update_test.c.orig	2026-07-22 22:30:40.842514898 +0200
@@ -59,7 +59,7 @@
 setup_test(void **state) {
 	UNUSED(state);
 
-	setenv("TZ", "", 1);
+	setenv("TZ", "GMT0", 1);
 	tzset();
 
 	return 0;