diff --git a/common/changes/@autorest/openapi-to-typespec/fix_typo_2024-03-11-07-26.json b/common/changes/@autorest/openapi-to-typespec/fix_typo_2024-03-11-07-26.json
new file mode 100644
index 0000000000..96e9fa0915
--- /dev/null
+++ b/common/changes/@autorest/openapi-to-typespec/fix_typo_2024-03-11-07-26.json
@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@autorest/openapi-to-typespec",
+      "comment": "fix wrong client lib import name",
+      "type": "patch"
+    }
+  ],
+  "packageName": "@autorest/openapi-to-typespec"
+}
\ No newline at end of file
diff --git a/packages/extensions/openapi-to-typespec/src/utils/decorators.ts b/packages/extensions/openapi-to-typespec/src/utils/decorators.ts
index fddf1eedba..599f5676b5 100644
--- a/packages/extensions/openapi-to-typespec/src/utils/decorators.ts
+++ b/packages/extensions/openapi-to-typespec/src/utils/decorators.ts
@@ -146,7 +146,7 @@ export function getPropertyClientDecorators(element: Property | Parameter): Type
   if (element.extensions?.["x-ms-client-flatten"]) {
     decorators.push({
       name: "flattenProperty",
-      module: "@typespec/typespec-client-generator-core",
+      module: "@azure-tools/typespec-client-generator-core",
       namespace: "Azure.ClientGenerator.Core",
       suppressionCode: "deprecated",
       suppressionMessage: "@flattenProperty decorator is not recommended to use.",
diff --git a/packages/extensions/openapi-to-typespec/test/arm-alertsmanagement/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-alertsmanagement/tsp-output/client.tsp
index b1676704ea..7757d58d15 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-alertsmanagement/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-alertsmanagement/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Azure.ResourceManager.AlertsManagement;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-analysisservices/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-analysisservices/tsp-output/client.tsp
index 7abe03b4f4..f9776e7b5c 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-analysisservices/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-analysisservices/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Azure.ResourceManager.Analysis;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-apimanagement/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-apimanagement/tsp-output/client.tsp
index a6533b63d3..8077e058be 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-apimanagement/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-apimanagement/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Azure.ResourceManager.ApiManagement;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-authorization/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-authorization/tsp-output/client.tsp
index 490902b96c..565ca685c9 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-authorization/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-authorization/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Azure.ResourceManager.Authorization;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-azureintegrationspaces/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-azureintegrationspaces/tsp-output/client.tsp
index 170d41c987..aa738c8fd0 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-azureintegrationspaces/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-azureintegrationspaces/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.IntegrationSpaces;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-compute/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-compute/tsp-output/client.tsp
index b7f2736294..5c39dd94a1 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-compute/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-compute/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.Compute;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-dns/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-dns/tsp-output/client.tsp
index 85d5d93014..b9af34ef37 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-dns/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-dns/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Azure.ResourceManager.Dns;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-machinelearningservices/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-machinelearningservices/tsp-output/client.tsp
index 450a6bb90d..63692ccb9b 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-machinelearningservices/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-machinelearningservices/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Azure.ResourceManager.MachineLearning;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-networkanalytics/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-networkanalytics/tsp-output/client.tsp
index f99ead8bf2..0082dd568d 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-networkanalytics/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-networkanalytics/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.NetworkAnalytics;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-playwrighttesting/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-playwrighttesting/tsp-output/client.tsp
index af9817897c..86fff102a9 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-playwrighttesting/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-playwrighttesting/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.AzurePlaywrightService;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-servicenetworking/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-servicenetworking/tsp-output/client.tsp
index 395e0902b5..973870e6f3 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-servicenetworking/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-servicenetworking/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.ServiceNetworking;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-sphere/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-sphere/tsp-output/client.tsp
index 18617fa816..fe3642005b 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-sphere/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-sphere/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.AzureSphere;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-storage/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-storage/tsp-output/client.tsp
index 3c61dda0a8..8798a5fc0a 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-storage/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-storage/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.Storage;
diff --git a/packages/extensions/openapi-to-typespec/test/arm-test/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/arm-test/tsp-output/client.tsp
index b338942136..16e9c423e2 100644
--- a/packages/extensions/openapi-to-typespec/test/arm-test/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/arm-test/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Microsoft.Test;
diff --git a/packages/extensions/openapi-to-typespec/test/bodyComplex/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/bodyComplex/tsp-output/client.tsp
index abb83730ee..43b9f4f069 100644
--- a/packages/extensions/openapi-to-typespec/test/bodyComplex/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/bodyComplex/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using AutoRestComplexTestService;
diff --git a/packages/extensions/openapi-to-typespec/test/keyvault/tsp-output/client.tsp b/packages/extensions/openapi-to-typespec/test/keyvault/tsp-output/client.tsp
index 88be4a3e37..d79437e7ae 100644
--- a/packages/extensions/openapi-to-typespec/test/keyvault/tsp-output/client.tsp
+++ b/packages/extensions/openapi-to-typespec/test/keyvault/tsp-output/client.tsp
@@ -1,5 +1,5 @@
 import "./main.tsp";
-import "@typespec/typespec-client-generator-core";
+import "@azure-tools/typespec-client-generator-core";
 
 using Azure.ClientGenerator.Core;
 using Azure.Keyvault;