diff --git a/package.json b/package.json
index fc0179b..fb85a5f 100644
--- a/package.json
+++ b/package.json
@@ -107,7 +107,7 @@
     "rollup-plugin-sourcemaps": "^0.4.1",
     "rollup-plugin-uglify": "^2.0.1",
     "rxjs": "^5.0.1",
-    "systemjs": "^0.20.12",
+    "systemjs": "^0.21.0",
     "tslint": "^5.4.2",
     "tslint-jasmine-rules": "^1.3.0",
     "typescript": "^2.3.4",