diff --git a/releases/contao.json b/releases/contao.json
index e2ca3720..8ce8bdaa 100644
--- a/releases/contao.json
+++ b/releases/contao.json
@@ -59,6 +59,7 @@
   "4.13.29": "2023-08-01",
   "4.13.3": "2022-05-05",
   "4.13.30": "2023-08-30",
+  "4.13.31": "2023-10-09",
   "4.13.4": "2022-05-05",
   "4.13.5": "2022-06-03",
   "4.13.6": "2022-07-05",
@@ -256,5 +257,6 @@
   "5.1.9": "2023-07-10",
   "5.2.0": "2023-08-15",
   "5.2.1": "2023-08-30",
-  "5.2.2": "2023-08-31"
+  "5.2.2": "2023-08-31",
+  "5.2.3": "2023-10-09"
 }
\ No newline at end of file