diff --git a/release/2.0.0+21.11.0.5.1 b/release/2.0.0+21.11.0.5.1
new file mode 100644
index 0000000..3a72f12
--- /dev/null
+++ b/release/2.0.0+21.11.0.5.1
@@ -0,0 +1,11 @@
+Large performance boost on this new version.
+
+It's probably best to undeploy and deploy from scratch when doing this upgrade
+as a number of things env vars have totally changed with this LOOL -> COOL
+migration in the new version.
+
+There is also a new admin username/password to deal with in the config.
+
+Read the blog post here for more background info:
+
+    https://www.collaboraoffice.com/code-21-11-release-notes/