diff --git a/tsconfig.json b/tsconfig.json
index 1949c951d3..178c0cd9fb 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -2,7 +2,7 @@
     "compilerOptions": {
         "module": "commonjs",
         "target": "es5",
-        "lib": ["es2017", "dom", "esnext.asynciterable"],
+        "lib": ["es2017", "dom", "esnext.asynciterable", "es2018.promise"],
         "experimentalDecorators": true,
         "downlevelIteration": true,
         "noImplicitReturns": true,