diff --git a/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/CHANGELOG.md b/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/CHANGELOG.md
index 35dd4e58b82b..a1ecf841edb0 100644
--- a/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/CHANGELOG.md
+++ b/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/CHANGELOG.md
@@ -1,11 +1,2 @@
-# Change History
+# Unreleased
 
-## Additive Changes
-
-### New Funcs
-
-1. ErrorAdditionalInfo.MarshalJSON() ([]byte, error)
-1. ErrorDetail.MarshalJSON() ([]byte, error)
-1. ProxyResource.MarshalJSON() ([]byte, error)
-1. Resource.MarshalJSON() ([]byte, error)
-1. UserAssignedIdentityProperty.MarshalJSON() ([]byte, error)
diff --git a/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/_meta.json b/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/_meta.json
index 821c30c72afe..207a9e6cf8b8 100644
--- a/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/_meta.json
+++ b/services/preview/webpubsub/mgmt/2021-04-01-preview/webpubsub/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "e5839301dfd424559851119c99ef0a2699fbd228",
+  "commit": "0c057560083bfdfd50202f0e79cfac8ec054d56a",
   "readme": "/_/azure-rest-api-specs/specification/webpubsub/resource-manager/readme.md",
   "tag": "package-2021-04-01-preview",
   "use": "@microsoft.azure/autorest.go@2.1.183",