diff --git a/src/Autodesk.Forge/Api/DerivativeWebhooksApi.cs b/src/Autodesk.Forge/Api/DerivativeWebhooksApi.cs
index 16e03ad..9e22837 100644
--- a/src/Autodesk.Forge/Api/DerivativeWebhooksApi.cs
+++ b/src/Autodesk.Forge/Api/DerivativeWebhooksApi.cs
@@ -1,7 +1,7 @@
 /* 
  * Forge SDK
  *
- * The Forge Platform contains an expanding collection of web service components that can be used with Autodesk cloud-based products or your own technologies. Take advantage of Autodesk’s expertise in design and engineering.
+ * The Forge Platform contains an expanding collection of web service components that can be used with Autodesk cloud-based products or your own technologies. Take advantage of Autodesk’s expertise in design and engineering.
  *
 
  * Contact: forge.help@autodesk.com
@@ -464,6 +464,8 @@ private string EventEnumToString (DerivativeWebhookEvent webhookEvent) {
 			switch ( webhookEvent ) {
 				case DerivativeWebhookEvent.ExtractionFinished:
 					return "extraction.finished";
+				case DerivativeWebhookEvent.ExtractionUpdated:
+					return "extraction.updated";
 				default:
 					throw new ApiException (400, "Webhook event type {webhookEvent} is not implemented.");
 			}
@@ -491,4 +493,4 @@ private dynamic CreateWebhookPostObject (string callbackUrl, string workflow, dy
 
 	}
 
-}
\ No newline at end of file
+}