diff --git a/README.md b/README.md
index 5068753..12206ee 100644
--- a/README.md
+++ b/README.md
@@ -62,6 +62,7 @@ This is not an exhaustive list of issues, but rather a place for us to note sign
 * Jenkins versions 1.651.2 and 2.3 removed the ability of plugins to set arbitrary job parameters that are not specifically defined in each job's configuration. This was an important security update, but it has broken compatibility with some plugins, including ours. See [here](https://jenkins.io/blog/2016/05/11/security-update/) for more information and workarounds if you are finding parameters unset or empty that you expect to have values.
 * [#473](https://github.com/jenkinsci/gitlab-plugin/issues/473) - When upgrading from plugin versions older than 1.2.0, you must upgrade to that version first, and then to the latest version. Otherwise, you will get a NullPointerException in com.cloudbees.plugins.credentials.matchers.IdMatcher after you upgrade. See the linked issue for specific instructions.
 * [#608](https://github.com/jenkinsci/gitlab-plugin/issues/608) - GitLab 9.5.0 - 9.5.4 has a bug that causes the "Test Webhook" function to fail when it sends a test to Jenkins. This was fixed in 9.5.5.
+* [#730](https://github.com/jenkinsci/gitlab-plugin/issues/730) - GitLab 10.5.6 introduced an issue which can cause HTTP 500 errors when webhooks are triggered. See the linked issue for a workaround.
 
 # Defined variables