diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1dc4988..286e3e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,33 +8,24 @@ CHANGELOG
 =========
 
 
-2.3.1 (unreleased)
+2.3.1 (2021-03-25)
 ------------------
 
-### Backend
-
-### Pages
-
-#### Landing page
-
 #### Configuration
 - Add authentication token in save-data request (PR#245 by Marcos Gonzalez, fixes #244).
 - Fix "Clear Configuration" link destination (PR#249 by Sebastian Wagner, fixes #248).
 
-#### Management
-
 #### Monitor
 - Fix link to configuration page of bot (PR#249 by Sebastian Wagner, fixes #248).
 
-#### Check
-
-### Documentation
-
-### Third-party libraries
-
-### Packaging
-
 ### Known issues
+- Graph jumps around on "Add edge" (#148).
+- wrong error message for new bots with existing ID (#152).
+- Monitor page: Automatic log refresh reset log page to first one (#190).
+- Load error if a bot has not optional `parameters` field in runtime configuration (#237).
+- Better error messag for missing authentication (#238).
+- Reload page after login (#243).
+- Debian packages usability: webserver not required, causing missing webserver configuration (#246).
 
 
 2.3.0 (2021-03-04)
diff --git a/NEWS.md b/NEWS.md
index bdee174..106c211 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -10,9 +10,11 @@ NEWS
 See the changelog for a full list of changes.
 
 
-2.3.1 (unreleased)
+2.3.1 (2021-03-25)
 ------------------
 
+No changes are required by administrators.
+
 
 2.3.0 (2021-03-04)
 ------------------
diff --git a/debian/changelog b/debian/changelog
index 063924d..d53c74c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,8 +1,8 @@
-intelmq-manager (2.3.1~alpha1-1) UNRELEASED; urgency=medium
+intelmq-manager (2.3.1~alpha1-1) stable; urgency=medium
 
-  * Start 2.3.1 development.
+  * Update to 2.3.1.
 
- -- Sebastian Wagner <wagner@cert.at>  Thu, 04 Mar 2021 13:59:55 +0100
+ -- Sebastian Wagner <wagner@cert.at>  Thu, 25 Mar 2021 14:01:40 +0100
 
 intelmq-manager (2.3.0-1) stable; urgency=medium
 
diff --git a/intelmq_manager/version.py b/intelmq_manager/version.py
index f655cff..9a905ae 100644
--- a/intelmq_manager/version.py
+++ b/intelmq_manager/version.py
@@ -3,5 +3,5 @@
 SPDX-FileCopyrightText: 2020 Intelmq Team <intelmq-team@cert.at>
 SPDX-License-Identifier: AGPL-3.0-or-later
 """
-__version_info__ = (2, 3, 1, 'alpha1')
+__version_info__ = (2, 3, 1)
 __version__ = '.'.join(map(str, __version_info__))