diff --git a/docs/architecture.mmd b/docs/architecture.mmd
index 594b510..e370149 100644
--- a/docs/architecture.mmd
+++ b/docs/architecture.mmd
@@ -1,3 +1,4 @@
+```mermaid
 flowchart TD
     SOURCE[(Private inspection histories<br/>read-only source)]
     SAMPLE[Private page-sampled histories<br/>up to 10,000 vehicles<br/>keyed vehicle tokens]
@@ -82,3 +83,4 @@ flowchart TD
     class LOGISTIC,TREE model
     class PUBLIC,CONTRACT,SITE,VIEWS,DEMO public
     class GUARDRAILS warning
+```
\ No newline at end of file