# Fullchain.pem still including root "ISRG Root X1" signed by "DST Root CA X3"

**URL:** <https://community.letsencrypt.org/t/fullchain-pem-still-including-root-isrg-root-x1-signed-by-dst-root-ca-x3/155075>\
**Category:** Help\
**Created:** [July 5, 2021, 3:26am UTC](https://community.letsencrypt.org/t/fullchain-pem-still-including-root-isrg-root-x1-signed-by-dst-root-ca-x3/155075 "2021-07-05T03:26:42Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![JamesLE](https://sea3.discourse-cdn.com/letsencrypt/user_avatar/community.letsencrypt.org/jamesle/32/49364_2.png) [@JamesLE](https://community.letsencrypt.org/u/JamesLE)\
**Post date:** [July 5, 2021, 4:07am UTC](https://community.letsencrypt.org/t/fullchain-pem-still-including-root-isrg-root-x1-signed-by-dst-root-ca-x3/155075/2 "2021-07-05T04:07:16Z")

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Yes, here’s an explanation: [Production Chain Changes](https://community.letsencrypt.org/t/production-chain-changes/150739)

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_[View the full topic](https://community.letsencrypt.org/t/fullchain-pem-still-including-root-isrg-root-x1-signed-by-dst-root-ca-x3/155075)._