diff --git a/CHANGELOG.md b/CHANGELOG.md
index b49971b..5036049 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@
 
 Full changelog for PHP Quill Renderer
 
+## v3.17.3 - 2019-04-10
+
+* Missing supported format in exception methods, thank you [Lode Claassen](https://github.com/lode).
+
 ## v3.17.2 - 2019-03-09
 
 * Additional work to fix [#117](https://github.com/deanblackborough/php-quill-renderer/issues/117),
diff --git a/README.md b/README.md
index 92b5e47..1b6edba 100644
--- a/README.md
+++ b/README.md
@@ -159,6 +159,7 @@ for use under the MIT License (MIT).
 * [davidraijmakers](https://github.com/davidraijmakers) [Issue #108] - Children not supported with headers.
 * [philippkuehn](https://github.com/philippkuehn) [Issue #109] - Multiple list output incorrect and paragraphs not being closed.
 * [mechanicalgux](https://github.com/mechanicalgux) [Issue #117] - Compound deltas don't know that they can be links.
+* [Lode Claassen](https://github.com/lode) - Missing supported format in exception messages.
 
 ## Coding standard credit