# \[20170106053301\] Critical: Upgrade Lambda to Node 4.3

**URL:** <https://community.convox.com/t/20170106053301-critical-upgrade-lambda-to-node-4-3/309>\
**Category:** Releases\
**Created:** [January 6, 2017, 5:32am UTC](https://community.convox.com/t/20170106053301-critical-upgrade-lambda-to-node-4-3/309 "2017-01-06T05:32:01Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ddollar](https://yyz1.discourse-cdn.com/flex029/user_avatar/community.convox.com/ddollar/32/3_2.png) [@ddollar](https://community.convox.com/u/ddollar)\
**Post date:** [January 6, 2017, 5:32am UTC](https://community.convox.com/t/20170106053301-critical-upgrade-lambda-to-node-4-3/309/1 "2017-01-06T05:32:01Z")

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- [#1519](https://github.com/convox/rack/pull/1519) Upgrade Lambda Node.JS to nodejs4.3 [[@nzoschke](https://github.com/nzoschke)]

This fixes a serious problem installing new Racks and creating new apps due to AWS disabling the old Node.JS runtime version in Lambda.

This update is **required** to create new apps. This also means **rollbacks to any older rack version is not possible**.