diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1fc1f4f..c807385 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,16 @@ This projects adheres to [Semantic Versioning](http://semver.org/) and [Keep a C
 ## [Unreleased][unreleased]
 -
 
+## [3.5.0] - 2024-02-07
+
+### Changed
+
+- Improved the support for Contact Form 7 checkbox fields used for the amount to be paid (`pronamic_pay_amount` tag option), multiple checked options/amounts are now added up. ([ba1322a](https://github.com/pronamic/wp-pronamic-pay-contact-form-7/commit/ba1322afb5d859f21281827a263dc94ed0dae350))
+
+Full set of changes: [`3.4.0...3.5.0`][3.5.0]
+
+[3.5.0]: https://github.com/pronamic/wp-pronamic-pay-contact-form-7/compare/v3.4.0...v3.5.0
+
 ## [3.4.0] - 2023-12-18
 
 ### Changed
diff --git a/package.json b/package.json
index 6d34f1b..d37c9ae 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "contact-form-7",
-	"version": "3.4.0",
+	"version": "3.5.0",
 	"description": "Contact Form 7 driver for the WordPress payment processing library.",
 	"author": {
 		"name": "Pronamic",
diff --git a/pronamic-pay-contact-form-7.php b/pronamic-pay-contact-form-7.php
index 9844121..3e4b3e0 100644
--- a/pronamic-pay-contact-form-7.php
+++ b/pronamic-pay-contact-form-7.php
@@ -4,7 +4,7 @@
  * Plugin URI: https://www.pronamic.eu/plugins/pronamic-pay-contact-form-7/
  * Description: Extend the Pronamic Pay plugin with Contact Form 7 support to receive payments through a variety of payment providers.
  *
- * Version: 3.4.0
+ * Version: 3.5.0
  * Requires at least: 4.7
  * Requires PHP: 7.4
  *
diff --git a/readme.txt b/readme.txt
index 518cdd8..87296f1 100644
--- a/readme.txt
+++ b/readme.txt
@@ -4,6 +4,6 @@ Tags: pronamic, pay, contact-form-7, add-on
 Requires at least: 5.2
 Tested up to: 6.0
 Requires PHP: 7.4
-Stable tag: 3.4.0
+Stable tag: 3.5.0
 
 Extend the Pronamic Pay plugin with Contact Form 7 support to receive payments through a variety of payment providers.