diff --git a/appdefs.yml b/appdefs.yml
index 9ae7abf..6108fe6 100644
--- a/appdefs.yml
+++ b/appdefs.yml
@@ -101,6 +101,13 @@ app:
               for more details.
             - Make sure the kernel of your Linux distribution is up-to-date.
   changelog:
+    - version: 23.05.1
+      date: 2023-05-19
+      changes:
+        - 'Updated Firefox to version 113.0.1-r1.'
+        - 'Updated baseimage to version 4.4.2, based on Alpine Linux 3.18, which brings the following changes:'
+        - '2:Rebuilt against latest distro images to get security fixes.'
+        - '2:Updated X server to version 1.20.14.'
     - version: 23.04.1
       date: 2023-04-29
       changes: