diff --git a/api_names_out.yaml b/api_names_out.yaml
index 526453c6a3e..e2fc8cc7d93 100644
--- a/api_names_out.yaml
+++ b/api_names_out.yaml
@@ -86832,6 +86832,8 @@
 "/dialogflow:v2/GoogleCloudDialogflowV2QueryParameters/sessionEntityTypes": session_entity_types
 "/dialogflow:v2/GoogleCloudDialogflowV2QueryParameters/sessionEntityTypes/session_entity_type": session_entity_type
 "/dialogflow:v2/GoogleCloudDialogflowV2QueryParameters/timeZone": time_zone
+"/dialogflow:v2/GoogleCloudDialogflowV2QueryParameters/webhookHeaders": webhook_headers
+"/dialogflow:v2/GoogleCloudDialogflowV2QueryParameters/webhookHeaders/webhook_header": webhook_header
 "/dialogflow:v2/GoogleCloudDialogflowV2QueryResult": google_cloud_dialogflow_v2_query_result
 "/dialogflow:v2/GoogleCloudDialogflowV2QueryResult/action": action
 "/dialogflow:v2/GoogleCloudDialogflowV2QueryResult/allRequiredParamsPresent": all_required_params_present
diff --git a/generated/google/apis/dialogflow_v2.rb b/generated/google/apis/dialogflow_v2.rb
index 1b91c3322aa..fe763a330b7 100644
--- a/generated/google/apis/dialogflow_v2.rb
+++ b/generated/google/apis/dialogflow_v2.rb
@@ -26,7 +26,7 @@ module Apis
     # @see https://cloud.google.com/dialogflow/
     module DialogflowV2
       VERSION = 'V2'
-      REVISION = '20201109'
+      REVISION = '20201116'
 
       # View and manage your data across Google Cloud Platform services
       AUTH_CLOUD_PLATFORM = 'https://www.googleapis.com/auth/cloud-platform'
diff --git a/generated/google/apis/dialogflow_v2/classes.rb b/generated/google/apis/dialogflow_v2/classes.rb
index 0b08ea640b9..fdc6c198261 100644
--- a/generated/google/apis/dialogflow_v2/classes.rb
+++ b/generated/google/apis/dialogflow_v2/classes.rb
@@ -4129,6 +4129,18 @@ class GoogleCloudDialogflowV2QueryParameters
         # @return [String]
         attr_accessor :time_zone
       
+        # This field can be used to pass HTTP headers for a webhook call. These headers
+        # will be sent to webhook along with the headers that have been configured
+        # through Dialogflow web console. The headers defined within this field will
+        # overwrite the headers configured through Dialogflow console if there is a
+        # conflict. Header names are case-insensitive. Google's specified headers are
+        # not allowed. Including: "Host", "Content-Length", "Connection", "From", "User-
+        # Agent", "Accept-Encoding", "If-Modified-Since", "If-None-Match", "X-Forwarded-
+        # For", etc.
+        # Corresponds to the JSON property `webhookHeaders`
+        # @return [Hash<String,String>]
+        attr_accessor :webhook_headers
+      
         def initialize(**args)
            update!(**args)
         end
@@ -4142,6 +4154,7 @@ def update!(**args)
           @sentiment_analysis_request_config = args[:sentiment_analysis_request_config] if args.key?(:sentiment_analysis_request_config)
           @session_entity_types = args[:session_entity_types] if args.key?(:session_entity_types)
           @time_zone = args[:time_zone] if args.key?(:time_zone)
+          @webhook_headers = args[:webhook_headers] if args.key?(:webhook_headers)
         end
       end
       
diff --git a/generated/google/apis/dialogflow_v2/representations.rb b/generated/google/apis/dialogflow_v2/representations.rb
index 909fe2f0d77..ee58f48f236 100644
--- a/generated/google/apis/dialogflow_v2/representations.rb
+++ b/generated/google/apis/dialogflow_v2/representations.rb
@@ -2345,6 +2345,7 @@ class Representation < Google::Apis::Core::JsonRepresentation
           collection :session_entity_types, as: 'sessionEntityTypes', class: Google::Apis::DialogflowV2::GoogleCloudDialogflowV2SessionEntityType, decorator: Google::Apis::DialogflowV2::GoogleCloudDialogflowV2SessionEntityType::Representation
       
           property :time_zone, as: 'timeZone'
+          hash :webhook_headers, as: 'webhookHeaders'
         end
       end
       
diff --git a/generated/google/apis/dialogflow_v2/synth.metadata b/generated/google/apis/dialogflow_v2/synth.metadata
index 7f5122644f5..35ea7f72107 100644
--- a/generated/google/apis/dialogflow_v2/synth.metadata
+++ b/generated/google/apis/dialogflow_v2/synth.metadata
@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/google-api-ruby-client.git",
-        "sha": "e317a0f5e6109142be13031fa9e9baee4d2f897e"
+        "sha": "fda99a7f81f55342ce6317eeb1430efb3a3049d0"
       }
     }
   ]