diff --git a/specification/cdn/resource-manager/readme.md b/specification/cdn/resource-manager/readme.md
index 044d481524b2..ac6e2f874a2f 100644
--- a/specification/cdn/resource-manager/readme.md
+++ b/specification/cdn/resource-manager/readme.md
@@ -28,7 +28,7 @@ These are the global settings for the Cdn API.
 title: CdnManagementClient
 description: Cdn Management Client
 openapi-type: arm
-tag: package-2019-12
+tag: package-2019-04
 ```
 
 ### Tag: package-2019-12