---
title: "Jinja2 templates are kept as plain text from October 31, 2026"
date: 2026-10-28
tags:
  - "Deprecations"
description: "From October 31, 2026, Mergify no longer evaluates Jinja2 expressions in your configuration and keeps them as plain text."
---

As announced in [Jinja2 templating stops working on October 31, 2026](https://docs.mergify.com/changelog/2026-09-23-jinja2-templating-stops-working-on-october-31-2026/), Mergify no longer evaluates Jinja2 in your configuration from October 31, 2026. Filters, loops, `{% if %}` blocks and other expressions now stay as written: a comment that uses `{{ assignee | join(', @') }}` posts that text, and a `commit_message_template` writes its template into your commit messages.
Plain `{{ variable }}` placeholders drawn from each field's allowed variables keep working, as does a bare `{{ author }}` in a rule condition. A value that is not valid once read as text, such as a bot account built with `{% if %}`, makes your configuration invalid.
To keep your messages and conditions working, replace every expression with the field's allowed variables, and replace `commit_message_template` with [`commit_message_format`](https://docs.mergify.com/workflow/actions/merge/#migrating-from-commit_message_template).