diff --git a/releases/wagtail.json b/releases/wagtail.json
index 15beb158..9601e497 100644
--- a/releases/wagtail.json
+++ b/releases/wagtail.json
@@ -83,9 +83,11 @@
   "2.15.3": "2022-01-26",
   "2.15.4": "2022-02-11",
   "2.15.5": "2022-04-11",
+  "2.15.6": "2022-09-05",
   "2.16": "2022-02-07",
   "2.16.1": "2022-02-11",
   "2.16.2": "2022-04-11",
+  "2.16.3": "2022-09-05",
   "2.2": "2018-08-10",
   "2.2.1": "2018-08-13",
   "2.2.2": "2018-08-29",