diff --git a/lib/rocky-lint.js b/lib/rocky-lint.js
index <HASH>..<HASH> 100644
--- a/lib/rocky-lint.js
+++ b/lib/rocky-lint.js
@@ -271,6 +271,7 @@ fs.mkdtemp(path.join(os.tmpdir(), 'rocky-lint-'), (err, dir) => {
     target: 'es5',
     allowUnreachableCode: true,
     allowUnusedLabels: true,
+    lib: ['lib.es5.d.ts'],
   };
 
   const compilerHost = ts.createCompilerHost(compilerOptions);
Force TypeScript to only load es5 lib