diff --git a/docs/releasenotes.rst b/docs/releasenotes.rst
index a89cb0483a48e910d9b9df3612a0413cef0703ee..74712fc7f03990d9ed3ce78e08ae5473e32de9ff 100644
--- a/docs/releasenotes.rst
+++ b/docs/releasenotes.rst
@@ -5,6 +5,14 @@ Release notes
 x.y.z
 -----
 
+Dropped support for Debian 10 (Buster).
+
+**Breaking changes:**
+
+* All roles
+
+  * Dropped support for Debian 10 (Buster).
+
 **Bug fixes:**
 
 * ``common`` role