diff --git a/CHANGELOG.md b/CHANGELOG.md
index a71ac9bd..15990011 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 # CHANGELOG
 
-## Next Release
+## v10.0.0 (2025-04-28)
+
+See our [Upgrade Guide](UPGRADE_GUIDE.md#upgrading-from-9x-to-100) for more details.
 
 - Drops support for Python 3.7 and 3.8
 - Adds the following functions to assist ReferralCustomers add credit cards and bank accounts:
diff --git a/UPGRADE_GUIDE.md b/UPGRADE_GUIDE.md
index f3fee66a..db35a06f 100644
--- a/UPGRADE_GUIDE.md
+++ b/UPGRADE_GUIDE.md
@@ -2,13 +2,41 @@
 
 Use the following guide to assist in the upgrade process of the `easypost-python` library between major versions.
 
+- [Upgrading from 9.x to 10.0](#upgrading-from-9x-to-100)
 - [Upgrading from 8.x to 9.0](#upgrading-from-8x-to-90)
 - [Upgrading from 7.x to 8.0](#upgrading-from-7x-to-80)
 - [Upgrading from 6.x to 7.0](#upgrading-from-6x-to-70)
 - [Upgrading from 5.x to 6.0](#upgrading-from-5x-to-60)
 
+## Upgrading from 9.x to 10.0
+
+### 10.0 High Impact Changes
+
+- [Updated Dependencies](#100-updated-dependencies)
+
+### 10.0 Medium Impact Changes
+
+- [Deprecations](#100-deprecations)
+
+### 10.0 Updated Dependencies
+
+**Python 3.9 Required**
+
+easypost-python now requires Python 3.9 or greater.
+
+### 10.0 Deprecations
+
+*Likelihood of Impact: **Medium***
+
+The following deprecated functions have been removed:
+
+- `user.all_api_keys` (use `api_key.all`)
+- `users.api_keys` (use `api_key.retrieve_api_keys_for_user`)
+
 ## Upgrading from 8.x to 9.0
 
+**NOTICE:** v9 is deprecated.
+
 ### 9.0 High Impact Changes
 
 - [Carbon Offset Removed](#90-carbon-offset-removed)
diff --git a/easypost/constant.py b/easypost/constant.py
index 066a239a..9604d2bf 100644
--- a/easypost/constant.py
+++ b/easypost/constant.py
@@ -1,6 +1,6 @@
 # flake8: noqa
 # Library version
-VERSION = "9.5.0"
+VERSION = "10.0.0"
 VERSION_INFO = [str(number) for number in VERSION.split(".")]
 
 # Client defaults
diff --git a/setup.py b/setup.py
index fb68d858..37687afe 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@
 
 setup(
     name="easypost",
-    version="9.5.0",
+    version="10.0.0",
     description="EasyPost Shipping API Client Library for Python",
     author="EasyPost",
     author_email="support@easypost.com",