diff --git a/setup/nextcloud.sh b/setup/nextcloud.sh
index 1c1f5b03..85c96c73 100755
--- a/setup/nextcloud.sh
+++ b/setup/nextcloud.sh
@@ -32,16 +32,16 @@ nextcloud_hash=d5c10b650e5396d5045131c6d22c02a90572527c
 #   https://github.com/nextcloud/user_external/tags
 #
 # * For these three packages, contact, calendar and user_external, the hash is the SHA1 hash of
-# the ZIP package, which you can find by just running this script and copying it from
-# the error message when it doesn't match what is below:
+# the release tarball (from the releases/download URL, not the source archive), which you can
+# find by running: curl -sL <url> | sha1sum
 
 # Always ensure the versions are supported, see https://apps.nextcloud.com/apps/contacts
 contacts_ver=5.5.3
-contacts_hash=799550f38e46764d90fa32ca1a6535dccd8316e5
+contacts_hash=b234ab410480a4106176a28f39c9b27f471d0473
 
 # Always ensure the versions are supported, see https://apps.nextcloud.com/apps/calendar
 calendar_ver=4.7.6
-calendar_hash=a995bca4effeecb2cab25f3bbeac9bfe05fee766
+calendar_hash=cf8e68e7d945ee71933f5bb71a969faf152da55c
 
 # Always ensure the versions are supported, see https://apps.nextcloud.com/apps/user_external
 user_external_ver=3.3.0
@@ -105,11 +105,11 @@ InstallNextcloud() {
 	# their github repositories.
 	mkdir -p /usr/local/lib/owncloud/apps
 
-	wget_verify "https://github.com/nextcloud-releases/contacts/archive/refs/tags/v$version_contacts.tar.gz" "$hash_contacts" /tmp/contacts.tgz
+	wget_verify "https://github.com/nextcloud-releases/contacts/releases/download/v$version_contacts/contacts-v$version_contacts.tar.gz" "$hash_contacts" /tmp/contacts.tgz
 	tar xf /tmp/contacts.tgz -C /usr/local/lib/owncloud/apps/
 	rm /tmp/contacts.tgz
 
-	wget_verify "https://github.com/nextcloud-releases/calendar/archive/refs/tags/v$version_calendar.tar.gz" "$hash_calendar" /tmp/calendar.tgz
+	wget_verify "https://github.com/nextcloud-releases/calendar/releases/download/v$version_calendar/calendar-v$version_calendar.tar.gz" "$hash_calendar" /tmp/calendar.tgz
 	tar xf /tmp/calendar.tgz -C /usr/local/lib/owncloud/apps/
 	rm /tmp/calendar.tgz