diff --git a/package.json b/package.json
index d980b64020..fcc00df32d 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,7 @@
       "^((?!-test).)*$"
     ],
     "unmockedModulePathPatterns": [
+      "alt",
       "stream",
       "tty",
       "net",