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# 15 Upgrade notes for 5.0.5

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#### Dropping values outside history/trend periods

From now on values older than the configured history and trend storage
period will be rejected, even if the internal housekeeping is disabled.
You may want to adjust history/trend storage periods after the upgrade.

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#### DB connection encryption setup

Parameters for encrypting the connection between frontend and the
database, available during Zabbix frontend installation, have been
modified. The *Configure DB connection* step of Zabbix web interface now
features a new checkbox *Verify certificate* with additional options
appearing upon marking it. Parameters that are unavailable in the
particular configuration will be disabled. For example, the *Database
TLS encryption* checkbox cannot be checked if using MySQL and *Database
host* is set to localhost. See [Secure connection to the
database](/manual/appendix/install/db_encrypt) page for the full
description.

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#### SourceIP and webhooks

The SourceIP configuration parameter is now used for webhooks.

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#### API changes

See the list of [API changes](/manual/api/changes_5.0) in Zabbix 5.0.5.

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