diff --git a/changelog b/changelog
index de0f2f802115f5f2053358bfed2372cc344870c7..dd8c210b48676a8c2be9f422e4fa48634dda56cd 100644
--- a/changelog
+++ b/changelog
@@ -36,3 +36,4 @@
       added top-level services to responses
 0.20: included both v4 & v6 addresses in peering info
 0.21: added parsing of 'logical-systems' (DBOARD3-150)
+0.22: return a skeleton response for unknown interfaces (DBOARD3-169)