# Apache Airflow 2.1.1 — Release & Upgrade Intelligence
- **Product:** Apache Airflow (https://airflow.apache.org)
- **Version:** 2.1.1
- **Released:** Jul 02, 2021
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/airflow/updates/2.1.1/

## Executive Summary (TL;DR)
Apache Airflow 2.1.1. Source highlight: Don't crash attempting to mask secrets in dict with non-string keys (#16601)

## Breaking Changes & Deprecations
- - Pins docutils to <0.17 until breaking behaviour is fixed (#16133)

## Bug Fixes
- Don't crash attempting to mask secrets in dict with non-string keys (#16601)
- Always install sphinx_airflow_theme from ``PyPI`` (#16594)
- Remove limitation for elasticsearch library (#16553)
- Adding extra requirements for build and runtime of the PROD image. (#16170)
- Cattrs 1.7.0 released by the end of May 2021 break lineage usage (#16173)
- Removes unnecessary packages from setup_requires (#16139)