diff --git a/README.md b/README.md
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@@ -525,7 +525,7 @@ The parentIFrame methods object in the iFrame is now always available and the `e
 
 ## Version History
 
-* v3.5.6 [#438](https://github.com/davidjbradshaw/iframe-resizer/issues/438) Check jQuery wrapper not already loaded.
+* v3.5.6 [#438](https://github.com/davidjbradshaw/iframe-resizer/issues/438) Check jQuery wrapper not already loaded. [#423](https://github.com/davidjbradshaw/iframe-resizer/issues/423) Properly removes event listeners [[Aaron Hardy](Aaronius)].
 * v3.5.5 [#373](https://github.com/davidjbradshaw/iframe-resizer/issues/373) Add option for custom size calculation methods in iFrame. [#374](https://github.com/davidjbradshaw/iframe-resizer/issues/374) Fix bug with in page links called from parent page.
 * v3.5.4 [#362](https://github.com/davidjbradshaw/iframe-resizer/issues/362) Handle jQuery being loaded in odd ways. [#297](https://github.com/davidjbradshaw/iframe-resizer/issues/297) Ensure document ready before resizing
 * v3.5.3 [#283](https://github.com/davidjbradshaw/iframe-resizer/issues/283) Added *readystatechange* event listener.