diff --git a/README.md b/README.md
index 50a9e9df..79fdec97 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ openDesk currently features the following functional main components:
 | Groupware            | OX App Suite                | GPL-2.0-only (backend), AGPL-3.0-or-later (frontend)                                   | [8.41](https://documentation.open-xchange.com/appsuite/releases/8.41/)                        | Online documentation available from within the installed application; [Additional resources](https://documentation.open-xchange.com/) |
 | Knowledge management | XWiki                       | LGPL-2.1-or-later                                                                      | [17.4.4](https://www.xwiki.org/xwiki/bin/view/ReleaseNotes/Data/XWiki/17.4.4/)                | [For the most recent release](https://www.xwiki.org/xwiki/bin/view/Documentation)                                                     |
 | Portal & IAM         | Nubus                       | AGPL-3.0-or-later                                                                      | [1.14.0](https://docs.software-univention.de/nubus-kubernetes-release-notes/1.x/en/1.14.html) | [Univention's documentation website](https://docs.software-univention.de/n/en/nubus.html)                                             |
-| Project management   | OpenProject                 | GPL-3.0-only                                                                           | [16.4.1](https://www.openproject.org/docs/release-notes/16-4-1/)                              | [For the most recent release](https://www.openproject.org/docs/user-guide/)                                                           |
+| Project management   | OpenProject                 | GPL-3.0-only                                                                           | [16.5.1](https://www.openproject.org/docs/release-notes/16-5-1/)                              | [For the most recent release](https://www.openproject.org/docs/user-guide/)                                                           |
 | Videoconferencing    | Jitsi                       | Apache-2.0                                                                             | [2.0.10431](https://github.com/jitsi/jitsi-meet/releases/tag/stable%2Fjitsi-meet_10431)       | [For the most recent  release](https://jitsi.github.io/handbook/docs/category/user-guide/)                                            |
 | Weboffice            | Collabora                   | MPL-2.0                                                                                | [25.04.5](https://www.collaboraoffice.com/code-25-04-release-notes/)                          | Online documentation available from within the installed application; [Additional resources](https://sdk.collaboraonline.com/)        |
 
diff --git a/helmfile/environments/default/images.yaml.gotmpl b/helmfile/environments/default/images.yaml.gotmpl
index e49a6c2c..b70ac124 100644
--- a/helmfile/environments/default/images.yaml.gotmpl
+++ b/helmfile/environments/default/images.yaml.gotmpl
@@ -762,7 +762,7 @@ images:
     # upstreamMirrorStartFrom: ["13", "1", "1"]
     registry: "registry.opencode.de"
     repository: "bmi/opendesk/components/supplier/openproject/images-mirror/open_desk"
-    tag: "16.4.1@sha256:b80443fc9fe1bf9ed475897316208b394cca4e730ae8ca34944373245cc0a4f5"
+    tag: "16.5.1@sha256:0e29ae9fcee825b76d62e10e374c10ad40da20ba9c0e584839645bb68e6167bf"
   openprojectBootstrap:
     # providerCategory: "Platform"
     # providerResponsible: "openDesk"