diff --git a/src/arc42/chapters/adr/0003-use-structurizr-for-c4-diagrams.adoc b/src/arc42/chapters/adr/0003-use-structurizr-for-c4-diagrams.adoc
index c67287e..913da1b 100644
--- a/src/arc42/chapters/adr/0003-use-structurizr-for-c4-diagrams.adoc
+++ b/src/arc42/chapters/adr/0003-use-structurizr-for-c4-diagrams.adoc
@@ -4,7 +4,7 @@ Date: 2025-05-08
 
 ==== Status
 
-Proposed
+Accepted
 
 ==== Decision makers
 
diff --git a/src/diagrams/c4/workspace.dsl b/src/diagrams/c4/workspace.dsl
index 14e2778..48d8c52 100644
--- a/src/diagrams/c4/workspace.dsl
+++ b/src/diagrams/c4/workspace.dsl
@@ -194,6 +194,9 @@ workspace "Big Bank plc" "This is an example workspace to illustrate the key fea
             signinController -> singlePageApplication "Sends back an authentication token to"
             autoLayout
             description "Summarises how the sign in feature works in the single-page application."
+            properties {
+                plantuml.sequenceDiagram true
+            }
         }
 
         deployment internetBankingSystem "Development" "DevelopmentDeployment" {