diff --git a/changelog.md b/changelog.md
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--- a/changelog.md
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@@ -1,3 +1,10 @@
+## Changes from 1.5.0 to 1.5.1.1
+
+Bugfix release
+
+### Fixed issues
+- [MARATHON-7848](https://jira.mesosphere.com/browse/MARATHON-7848) Fixes regression in which underscores were no longer permitted in network names
+
 ## Changes from 1.5.0 to 1.5.1
 Bugfix release