diff --git a/CHANGELOG.md b/CHANGELOG.md
index d104d96..cc96371 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Change Log
 
+## 9.0.0
+
+-   Dropped support for Python < 3.10 (no other changes)
+
 ## 8.0.0
 
 -   Parser now accepts both strings and bytes, and will encode strings to bytes using UTF-8
diff --git a/cobalt/__init__.py b/cobalt/__init__.py
index 738b0c7..caeba1c 100644
--- a/cobalt/__init__.py
+++ b/cobalt/__init__.py
@@ -8,7 +8,7 @@
 from .portion import PortionStructure, Portion
 from .uri import FrbrUri
 
-__version__ = '8.0.1'
+__version__ = '9.0.0'
 
 __all__ = [
     'Act', 'AkomaNtosoDocument', 'Amendment', 'AmendmentEvent', 'AmendmentList', 'AmendmentStructure',