diff --git a/ChangeLog.md b/ChangeLog.md
index 0e5d77d34..6f0572486 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,10 @@
 # Changelog
 
+## Version 0.20.0
+* All: Update OpenAPI spec
+* Javascript: Fix bug with message attempt resend (would throw on return)
+* Python: Fix optional bug where optional return types would throw
+
 ## Version 0.19.1
 * Python: Fix issue with pip package not generating the `openapi_client` properly on deploy
 
diff --git a/java/README.md b/java/README.md
index 841d3db3e..7c79a011c 100644
--- a/java/README.md
+++ b/java/README.md
@@ -18,7 +18,7 @@ Add this dependency to your project's POM:
 <dependency>
   <groupId>com.svix</groupId>
   <artifactId>svix</artifactId>
-  <version>0.19.1</version>
+  <version>0.20.0</version>
   <scope>compile</scope>
 </dependency>
 ```
@@ -28,7 +28,7 @@ Add this dependency to your project's POM:
 Add this dependency to your project's build file:
 
 ```groovy
-implementation "com.svix:svix:0.19.1"
+implementation "com.svix:svix:0.20.0"
 ```
 
 
diff --git a/java/gradle.properties b/java/gradle.properties
index fc8117ec9..547168f2c 100644
--- a/java/gradle.properties
+++ b/java/gradle.properties
@@ -1,5 +1,5 @@
 GROUP=com.svix
-VERSION_NAME=0.19.1
+VERSION_NAME=0.20.0
 
 POM_URL=https://github.com/svix/svix-libs
 POM_SCM_URL=git@github.com:svix/svix-libs.git
diff --git a/javascript/package.json b/javascript/package.json
index f3c1cb64f..c04e45f9f 100644
--- a/javascript/package.json
+++ b/javascript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "svix",
-  "version": "0.19.1",
+  "version": "0.20.0",
   "description": "Svix API client",
   "author": "svix",
   "repository": "https://github.com/svix/svix-libs",
diff --git a/python/setup.py b/python/setup.py
index 5587b796c..f11e77eb6 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -11,7 +11,7 @@
 from setuptools import setup, find_packages  # noqa: H301
 
 NAME = "svix"
-VERSION = "0.19.1"
+VERSION = "0.20.0"
 # To install the library, run the following
 #
 # python setup.py install
diff --git a/ruby/Gemfile.lock b/ruby/Gemfile.lock
index 5ddcfcff1..9ffd5e372 100644
--- a/ruby/Gemfile.lock
+++ b/ruby/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    svix (0.19.1)
+    svix (0.20.0)
 
 GEM
   remote: https://rubygems.org/
diff --git a/ruby/src/svix/version.rb b/ruby/src/svix/version.rb
index fe7a962d9..c408447b8 100644
--- a/ruby/src/svix/version.rb
+++ b/ruby/src/svix/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Svix
-  VERSION = "0.19.1"
+  VERSION = "0.20.0"
 end