diff --git a/README.md b/README.md
index a79cbd1..5f6e69f 100644
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+++ b/README.md
@@ -23,3 +23,15 @@ npm start
 
 [Excalidraw]: https://excalidraw.com
 [excalidraw-room]: https://github.com/excalidraw/excalidraw-room
+
+## Fork & mirrors
+
+Fork of https://github.com/jitsi/excalidraw-backend
+
+Development happens at: https://repo.prod.meissa.de/meissa/excalidraw-backend
+
+Mirrors are:
+
+* https://github.com/DomainDrivenArchitecture/excalidraw-backend
+
+For more details about our repository model see: https://repo.prod.meissa.de/meissa/federate-your-repos
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