diff --git a/architecture.md b/architecture.md
index 171be77..be7bb13 100644
--- a/architecture.md
+++ b/architecture.md
@@ -103,6 +103,8 @@ Considered alternatives include:
 ### [SelfHostBlocks](https://nlnet.nl/project/SelfHostBlocks/)
 
 SelfHostBlocks offers Nix module contracts to decouple application configuration from implementation details, empowering user choice by providing sane defaults yet a [unified interface](https://nlnet.nl/project/SelfHostBlocks/).
+Offered contracts include back-ups, reverse proxies, single sign-on and LDAP.
+In addition, we have been in contact with its creator.
 
 Considered alternatives include: