diff --git a/CHANGELOG b/CHANGELOG
index 15756f3..2a9303e 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -30,3 +30,10 @@
[1.3.0]
* Add forumUrl
+[1.3.1]
+* Update Mastodon to 3.1.5
+* [Full changelog](https://github.com/tootsuite/mastodon/releases/tag/v3.1.5)
+* Security: Fix media attachment enumeration (ThibG)
+* Security: Change rate limits for various paths (Gargron)
+* Security: Fix other sessions not being logged out on password change (Gargron)
+
diff --git a/CloudronManifest.json b/CloudronManifest.json
index 539455f..80cad20 100644
--- a/CloudronManifest.json
+++ b/CloudronManifest.json
@@ -5,7 +5,7 @@
"description": "file://DESCRIPTION.md",
"changelog": "file://CHANGELOG",
"tagline": "Federated social network",
- "version": "1.3.0",
+ "version": "1.3.1",
"healthCheckPath": "/about",
"httpPort": 8000,
"memoryLimit": 1610612736,
diff --git a/DESCRIPTION.md b/DESCRIPTION.md
index 35f9e5c..e4ef555 100644
--- a/DESCRIPTION.md
+++ b/DESCRIPTION.md
@@ -1,4 +1,4 @@
-This app packages Mastodon 3.1.3.
+This app packages Mastodon 3.1.5.
Your self-hosted, globally interconnected microblogging community.