# How to pickup new MQTT topics in telegraf

**URL:** <https://community.influxdata.com/t/how-to-pickup-new-mqtt-topics-in-telegraf/15842>\
**Category:** Telegraf\
**Tags:** telegraf\
**Created:** [September 3, 2020, 7:12pm UTC](https://community.influxdata.com/t/how-to-pickup-new-mqtt-topics-in-telegraf/15842 "2020-09-03T19:12:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![chrisgla](https://avatars.discourse-cdn.com/v4/letter/c/8c91f0/32.png) [@chrisgla](https://community.influxdata.com/u/chrisgla)\
**Post date:** [September 3, 2020, 7:12pm UTC](https://community.influxdata.com/t/how-to-pickup-new-mqtt-topics-in-telegraf/15842/1 "2020-09-03T19:12:07Z")

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Setting up telegraf, I have a working connection with wildcard topic “#” and points passing, but if I add points I don’t see them in Chronograf.

To prove it’s not data format, etc, I renamed a working topic at the source (from meter/frequency to meter/hertz) to see if telegraf picked up the new topic- no.  
I can see the renamed point in MQTT explorer and other subscribers.

Do I need to do something to update the topic list? Have tried reloading telegraf and Influx.

Latest versions of TIC.

Thanks!

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<div class="post-metadata">

**Author:** ![chrisgla](https://avatars.discourse-cdn.com/v4/letter/c/8c91f0/32.png) [@chrisgla](https://community.influxdata.com/u/chrisgla)\
**Post date:** [September 4, 2020, 1:22pm UTC](https://community.influxdata.com/t/how-to-pickup-new-mqtt-topics-in-telegraf/15842/2 "2020-09-04T13:22:09Z")

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I partly figured this out- setting persistent\_session = false brought up[ the new topics.

Is there a way to update topics if persistent is set to true?