diff --git a/packages/runtime-handler/src/dev-runtime/internal/runtime.ts b/packages/runtime-handler/src/dev-runtime/internal/runtime.ts
index 6ebc7ffc..54546173 100644
--- a/packages/runtime-handler/src/dev-runtime/internal/runtime.ts
+++ b/packages/runtime-handler/src/dev-runtime/internal/runtime.ts
@@ -82,7 +82,7 @@ export function create({
       env.AUTH_TOKEN,
       options
     );
-    const service = client.sync.services(
+    const service = client.sync.v1.services(
       serviceName || 'default'
     ) as RuntimeSyncServiceContext;
 
diff --git a/packages/twilio-run/src/runtime/internal/runtime.ts b/packages/twilio-run/src/runtime/internal/runtime.ts
index 6571c8da..62a02ea4 100644
--- a/packages/twilio-run/src/runtime/internal/runtime.ts
+++ b/packages/twilio-run/src/runtime/internal/runtime.ts
@@ -72,7 +72,7 @@ export function create({ env }: StartCliConfig): RuntimeInstance {
         .join(',')})`,
     });
     const client = twilio(env.ACCOUNT_SID, env.AUTH_TOKEN, options);
-    const service = (client.sync.services(
+    const service = (client.sync.v1.services(
       serviceName || 'default'
     ) as unknown) as RuntimeSyncServiceContext;