diff --git a/CHANGELOG.md b/CHANGELOG.md
index 563825e..039933b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## 6.4.601 - 2021-02-11
+### Fixed:
+- remove stale lockfile
+### AppImage version:
+- Collabora Online Development Edition (CODE) tag [cp-6.4.6-1](https://github.com/CollaboraOnline/online/releases/tag/cp-6.4.6-1)
+- Collabora Office tag [cp-6.4-23](https://git.libreoffice.org/core/+/refs/tags/cp-6.4-23)
+
 ## 6.4.503 - 2021-02-05
 ### Fixed:
 - fixed logical error in startup code
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 3f8b15c..9ab74f6 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -24,7 +24,7 @@ sudo -u wwwrun php -d memory_limit=512M ./occ app:update --all
 
 Of course, alternatively you could increase memory usage and PHP time-outs by default, see the [Nextcloud documentation.](https://docs.nextcloud.com/server/latest/admin_manual/configuration_files/big_file_upload_configuration.html?highlight=php%20timeout#configuring-your-web-server)
 ]]></description>
-    <version>6.4.503</version>
+    <version>6.4.601</version>
     <licence>apache</licence>
     <author>Collabora Productivity</author>
     <namespace>RichDocumentsCODE</namespace>