diff --git a/troposphere/servicediscovery.py b/troposphere/servicediscovery.py
index 6a4535f75..6fa8a9460 100644
--- a/troposphere/servicediscovery.py
+++ b/troposphere/servicediscovery.py
@@ -1,9 +1,26 @@
-# Copyright (c) 2012-2017, Mark Peek <mark@peek.org>
+# Copyright (c) 2012-2021, Mark Peek <mark@peek.org>
 # All rights reserved.
 #
 # See LICENSE file for full license.
+#
+# *** Do not modify - this file is autogenerated ***
+# Resource specification version: 35.0.0
+
+
+from . import AWSObject
+from . import AWSProperty
+from troposphere import Tags
+from .validators import double
+
+
+class HttpNamespace(AWSObject):
+    resource_type = "AWS::ServiceDiscovery::HttpNamespace"
 
-from . import AWSObject, AWSProperty, Tags
+    props = {
+        "Description": (str, False),
+        "Name": (str, True),
+        "Tags": (Tags, False),
+    }
 
 
 class Instance(AWSObject):
@@ -37,30 +54,32 @@ class PublicDnsNamespace(AWSObject):
     }
 
 
-class HealthCheckConfig(AWSProperty):
+class DnsRecord(AWSProperty):
     props = {
-        "FailureThreshold": (float, False),
-        "ResourcePath": (str, False),
+        "TTL": (double, True),
         "Type": (str, True),
     }
 
 
-class HealthCheckCustomConfig(AWSProperty):
-    props = {"FailureThreshold": (float, True)}
+class DnsConfig(AWSProperty):
+    props = {
+        "DnsRecords": ([DnsRecord], True),
+        "NamespaceId": (str, False),
+        "RoutingPolicy": (str, False),
+    }
 
 
-class DnsRecord(AWSProperty):
+class HealthCheckConfig(AWSProperty):
     props = {
-        "TTL": (str, True),
+        "FailureThreshold": (double, False),
+        "ResourcePath": (str, False),
         "Type": (str, True),
     }
 
 
-class DnsConfig(AWSProperty):
+class HealthCheckCustomConfig(AWSProperty):
     props = {
-        "DnsRecords": ([DnsRecord], True),
-        "NamespaceId": (str, False),
-        "RoutingPolicy": (str, False),
+        "FailureThreshold": (double, False),
     }
 
 
@@ -75,14 +94,5 @@ class Service(AWSObject):
         "Name": (str, False),
         "NamespaceId": (str, False),
         "Tags": (Tags, False),
-    }
-
-
-class HttpNamespace(AWSObject):
-    resource_type = "AWS::ServiceDiscovery::HttpNamespace"
-
-    props = {
-        "Description": (str, False),
-        "Name": (str, True),
-        "Tags": (Tags, False),
+        "Type": (str, False),
     }