diff --git a/CHANGES.md b/CHANGES.md
index 544e276..317eb35 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -5,12 +5,6 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [1.0.RC1] - 2024-05-11
 
-## [0.1.0] - 2022-03-22
-
-### Added
-
-### Changed
-
-### Removed
+* First complete release
diff --git a/bw_aggregation/__init__.py b/bw_aggregation/__init__.py
index 3e7b0e7..0980dc6 100644
--- a/bw_aggregation/__init__.py
+++ b/bw_aggregation/__init__.py
@@ -8,7 +8,7 @@
     "Speedup",
 )
 
-__version__ = "0.0.1"
+__version__ = "1.0.RC1"
 
 
 from bw2data.backends import Activity