diff --git a/services/preview/virtualmachineimagebuilder/mgmt/2019-05-01-preview/virtualmachineimagebuilder/CHANGELOG.md b/services/preview/virtualmachineimagebuilder/mgmt/2019-05-01-preview/virtualmachineimagebuilder/CHANGELOG.md
index 270b05330172..6e4a449a67a0 100644
--- a/services/preview/virtualmachineimagebuilder/mgmt/2019-05-01-preview/virtualmachineimagebuilder/CHANGELOG.md
+++ b/services/preview/virtualmachineimagebuilder/mgmt/2019-05-01-preview/virtualmachineimagebuilder/CHANGELOG.md
@@ -1,5 +1,5 @@
-Generated from https://github.com/Azure/azure-rest-api-specs/tree/3c764635e7d442b3e74caf593029fcd440b3ef82//specification/imagebuilder/resource-manager/readme.md tag: `package-preview-2019-05`
+Generated from https://github.com/Azure/azure-rest-api-specs/tree/21159753c7a34b0347169c139cea18c5d24c8575/specification/imagebuilder/resource-manager/readme.md tag: `package-preview-2019-05`
 
-Code generator @microsoft.azure/autorest.go@2.1.171
+Code generator