diff --git a/package.json b/package.json
index 226f3f0..0f29b6b 100644
--- a/package.json
+++ b/package.json
@@ -44,6 +44,7 @@
     "standard": "^16.0.1"
   },
   "dependencies": {
+    "@types/readable-stream": "^2.3.13",
     "aes-js": "^3.1.2",
     "buffer-equal": "^1.0.0",
     "debug": "^4.3.2",