diff --git a/release/4.0.0+16.1.0 b/release/4.0.0+16.1.0
new file mode 100644
index 0000000..2656362
--- /dev/null
+++ b/release/4.0.0+16.1.0
@@ -0,0 +1,5 @@
+This major release comes with a blog post about a CVE:
+
+    https://www.keycloak.org/2021/12/cve.html
+
+Not all versions are affected but they're suggesting that people upgrade soon.