diff --git a/tools/azure-sdk-tools/devtools_testutils/keyvault_preparer.py b/tools/azure-sdk-tools/devtools_testutils/keyvault_preparer.py
index 9128ebf8b255..7c3e76dae689 100644
--- a/tools/azure-sdk-tools/devtools_testutils/keyvault_preparer.py
+++ b/tools/azure-sdk-tools/devtools_testutils/keyvault_preparer.py
@@ -103,7 +103,7 @@ def create_resource(self, name, **kwargs):
             retries = 4
             for i in range(retries):
                 try:
-                    vault = self.client.vaults.create_or_update(group, name, parameters).result()
+                    vault = self.client.vaults.begin_create_or_update(group, name, parameters).result()
                     break
                 except Exception as ex:
                     if "VaultAlreadyExists" in str(ex):