diff --git a/package.json b/package.json
index 5d2b263908..c7b665a8cb 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "lint:ts": "tslint \"__tests__/**/*.ts\"",
     "lint:js": "eslint \"{__tests__,src,pages/src,pages/lib}/**/*.js\"",
     "format": "prettier --single-quote --trailing-comma=es5 --write \"{__tests__,src,pages/src,pages/lib,perf,resources}/**/*{\\.js,\\.ts}\"",
-    "testonly": "./resources/jest",
+    "testonly": "./resources/jest.sh",
     "test": "run-s format build lint testonly test:types:*",
     "test:travis": "npm run test && ./resources/check-changes",
     "test:types:ts": "tsc ./type-definitions/Immutable.d.ts --lib es2015 && dtslint type-definitions/ts-tests",
diff --git a/resources/jest b/resources/jest.sh
similarity index 100%
rename from resources/jest
rename to resources/jest.sh