diff --git a/services/preview/signalr/mgmt/2021-04-01-preview/signalr/CHANGELOG.md b/services/preview/signalr/mgmt/2021-04-01-preview/signalr/CHANGELOG.md
index 35dd4e58b82b..a1ecf841edb0 100644
--- a/services/preview/signalr/mgmt/2021-04-01-preview/signalr/CHANGELOG.md
+++ b/services/preview/signalr/mgmt/2021-04-01-preview/signalr/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/signalr/mgmt/2021-04-01-preview/signalr/_meta.json b/services/preview/signalr/mgmt/2021-04-01-preview/signalr/_meta.json
index 5470b59f4a61..3b64edc4884b 100644
--- a/services/preview/signalr/mgmt/2021-04-01-preview/signalr/_meta.json
+++ b/services/preview/signalr/mgmt/2021-04-01-preview/signalr/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "ea5bc27ee9cadeb67767d774c82095be2420bcad",
+  "commit": "a7d586879f08845a76d817fcfb00ab815b71e84a",
   "readme": "/_/azure-rest-api-specs/specification/signalr/resource-manager/readme.md",
   "tag": "package-2021-04-01-preview",
   "use": "@microsoft.azure/autorest.go@2.1.183",