diff --git a/package.json b/package.json
index d112d57d..37a0551d 100644
--- a/package.json
+++ b/package.json
@@ -26,6 +26,7 @@
     "join-async-iterator": "^1.1.1",
     "junk": "^3.1.0",
     "minimist": "^1.2.7",
+    "once": "^1.4.0",
     "piece-length": "^2.0.1",
     "queue-microtask": "^1.2.3",
     "run-parallel": "^1.2.0",