diff --git a/specs/paymentrequest.html b/specs/paymentrequest.html
index 22007267..3090c37a 100644
--- a/specs/paymentrequest.html
+++ b/specs/paymentrequest.html
@@ -1274,6 +1274,14 @@ <h2>Exposing user information</h2>
       </section>
     </section>
 
+	<section id="flow">
+      <h2>Payment Request Flow</h2>
+      <p>This diagram illustrates the flow of information for a typical card payment. The aqua coloured boxes highlight where paymentRequest API calls occur into the flow. The Web Payments Working Group has information about <A href="https://github.com/w3c/webpayments/wiki/Flows">more payment flows</a>.</p>
+	  
+  	  <div><a href="http://www.plantuml.com/plantuml/proxy?fmt=svg&src=https://raw.githubusercontent.com/w3c/webpayments-flows/gh-pages/TargetFlows/PaymentRequestAPI.pml"><img width="100%" src="http://www.plantuml.com/plantuml/proxy?fmt=svg&src=https://raw.githubusercontent.com/w3c/webpayments-flows/gh-pages/TargetFlows/PaymentRequestAPI.pml"/></a></div>
+	
+    </section>
+	
     <hr>
     <div class="issue" data-number="20" title="Ensure references are up-to-date">
       The references in the spec need to be up-to-date.