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Broken Signal notificationsNotification Sender
Starting from October 5, Healthchecks was not delivering some of the Signal notifications. The failed deliveries were caused by Healthchecks running an out-of-date signal-cli version (v0.10.11, released in August 2022), and Signal servers rejecting it:

> java.lang.RuntimeException: org.whispersystems.signalservice.api.push.exceptions.DeprecatedVersionException: StatusCode: 499

We've now updated signal-cli to the latest version (v0.11.3) and the notifications are now being delivered again.


The issue is resolved.