diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60fe5ed4..6e276393 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,9 +6,11 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [PEP 440](https://www.python.org/dev/peps/pep-0440/)
 and uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [8.2.1]
+## [9.0.0]
 ### Changed
-- Orbit files are now retrived from [s1-orbits](https://github.com/ASFHyP3/sentinel1-orbits-py).
+- Orbit files are now retrieved using the [s1-orbits](https://github.com/ASFHyP3/sentinel1-orbits-py) library.
+### Removed
+- Removed support for the `--esa-username` and `--esa-password` command-line options and the `ESA_USERNAME` and `ESA_PASSWORD` environment variables.
 
 ## [8.2.0]
 ### Changed
diff --git a/requirements.txt b/requirements.txt
index b037363f..f5ba6591 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,4 +15,4 @@ pillow==10.4.0
 pyproj==3.6.1
 python-dateutil==2.9.0.post0
 rtree==1.3.0
-s1_orbits==0.1.1
\ No newline at end of file
+s1_orbits==0.1.1