diff --git a/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/CHANGELOG.md b/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/CHANGELOG.md
+++ b/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/_meta.json b/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/_meta.json
index 7c5e7f0b3c10..57721e303587 100644
--- a/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/_meta.json
+++ b/services/preview/deploymentmanager/mgmt/2018-09-01-preview/deploymentmanager/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "b73476764bf722a64ff887f7d1ed943e8afb6f42",
   "readme": "/_/azure-rest-api-specs/specification/deploymentmanager/resource-manager/readme.md",
   "tag": "package-2018-09-01-preview",
   "use": "@microsoft.azure/autorest.go@2.1.187",
diff --git a/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/CHANGELOG.md b/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/CHANGELOG.md
index 52911e4cc5e4..a1ecf841edb0 100644
--- a/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/CHANGELOG.md
+++ b/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/CHANGELOG.md
@@ -1,2 +1,2 @@
-# Change History
+# Unreleased
 
diff --git a/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/_meta.json b/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/_meta.json
index e689ea076c85..51f5a7a21b4b 100644
--- a/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/_meta.json
+++ b/services/preview/deploymentmanager/mgmt/2019-11-01-preview/deploymentmanager/_meta.json
@@ -1,5 +1,5 @@
 {
-  "commit": "3c764635e7d442b3e74caf593029fcd440b3ef82",
+  "commit": "b73476764bf722a64ff887f7d1ed943e8afb6f42",
   "readme": "/_/azure-rest-api-specs/specification/deploymentmanager/resource-manager/readme.md",
   "tag": "package-2019-11-01-preview",
   "use": "@microsoft.azure/autorest.go@2.1.187",