diff --git a/sdk/appservice/arm-appservice/CHANGELOG.md b/sdk/appservice/arm-appservice/CHANGELOG.md
index 87b5be0c8162..7e82ee3c4e4f 100644
--- a/sdk/appservice/arm-appservice/CHANGELOG.md
+++ b/sdk/appservice/arm-appservice/CHANGELOG.md
@@ -1,5 +1,15 @@
 # Release History
 
+## 18.0.1 (Unreleased)
+
+### Features Added
+
+### Breaking Changes
+
+### Bugs Fixed
+
+### Other Changes
+
 ## 18.0.0 (2025-11-18)
 The App Service has been divided into three separate services: App Service, Domain Registration, and Certificate Registration. APIs for Domain Registration are available in the @azure/arm-domainregistration package, and APIs for Certificate Registration are provided in the @azure/arm-certificateregistration package.
 
diff --git a/sdk/appservice/arm-appservice/package.json b/sdk/appservice/arm-appservice/package.json
index b94fd1e84402..0097efc6140f 100644
--- a/sdk/appservice/arm-appservice/package.json
+++ b/sdk/appservice/arm-appservice/package.json
@@ -3,7 +3,7 @@
   "sdk-type": "mgmt",
   "author": "Microsoft Corporation",
   "description": "A generated SDK for WebSiteManagementClient.",
-  "version": "18.0.0",
+  "version": "18.0.1",
   "engines": {
     "node": ">=20.0.0"
   },
diff --git a/sdk/appservice/arm-appservice/src/webSiteManagementClient.ts b/sdk/appservice/arm-appservice/src/webSiteManagementClient.ts
index 753f0b003aa8..6e20d9afa907 100644
--- a/sdk/appservice/arm-appservice/src/webSiteManagementClient.ts
+++ b/sdk/appservice/arm-appservice/src/webSiteManagementClient.ts
@@ -177,7 +177,7 @@ export class WebSiteManagementClient extends coreClient.ServiceClient {
       credential: credentials,
     };
 
-    const packageDetails = `azsdk-js-arm-appservice/18.0.0`;
+    const packageDetails = `azsdk-js-arm-appservice/18.0.1`;
     const userAgentPrefix =
       options.userAgentOptions && options.userAgentOptions.userAgentPrefix
         ? `${options.userAgentOptions.userAgentPrefix} ${packageDetails}`