diff --git a/testing/tests/timezone/5040-expand.test b/testing/tests/timezone/5040-expand.test
index 791d3dd0..8d8cc8a4 100644
--- a/testing/tests/timezone/5040-expand.test
+++ b/testing/tests/timezone/5040-expand.test
@@ -1,8 +1,8 @@
 #
-# List timezone server timezones
+# Expand 10 years of timezone changes
 #
 TYPE=GET
-URL=http://regression.host/tz.php?action=expand&tzid=Pacific/Auckland
+URL=http://regression.host/tz.php?action=expand&tzid=Pacific/Auckland&start=2012-01-01&end=2022-12-31
 HEAD
 
 REPLACE=/dtstamp>[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}Z/dtstamp>all good/
diff --git a/testing/tests/timezone/5041-expand.test b/testing/tests/timezone/5041-expand.test
index f8e2a3b2..78956f29 100644
--- a/testing/tests/timezone/5041-expand.test
+++ b/testing/tests/timezone/5041-expand.test
@@ -1,8 +1,11 @@
 #
 # Fetch an expanded timezone from the server.
 #
+# Test an end date that is a bit more than the default of 10 years from the
+# current year.
+#
 TYPE=GET
-URL=http://regression.host/tz.php?action=expand&tzid=America/Indiana/Indianapolis&start=2009-01-01
+URL=http://regression.host/tz.php?action=expand&tzid=America/Indiana/Indianapolis&start=2009-01-01&end=2022-12-31
 HEAD
 
 REPLACE=/dtstamp>[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}Z/dtstamp>all good/
diff --git a/testing/tests/timezone/5042-expand.test b/testing/tests/timezone/5042-expand.test
index d275dcd6..9753c29e 100644
--- a/testing/tests/timezone/5042-expand.test
+++ b/testing/tests/timezone/5042-expand.test
@@ -2,7 +2,7 @@
 # Fetch an expanded timezone from the server.
 #
 TYPE=GET
-URL=http://regression.host/tz.php?action=expand&tzid=America/Indiana/Indianapolis&end=2013-07-01
+URL=http://regression.host/tz.php?action=expand&tzid=America/Indiana/Indianapolis&start=2012-01-01&end=2013-07-01
 HEAD
 
 REPLACE=/dtstamp>[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}Z/dtstamp>all good/