diff --git a/node_modules/functional-red-black-tree/package.json b/node_modules/functional-red-black-tree/package.json
index a8cacfdee0..12c63221b3 100644
--- a/node_modules/functional-red-black-tree/package.json
+++ b/node_modules/functional-red-black-tree/package.json
@@ -9,7 +9,7 @@
   "dependencies": {},
   "devDependencies": {
     "iota-array": "^0.0.1",
-    "tape": "^2.12.0"
+    "tape": "^4.0.0"
   },
   "scripts": {
     "test": "tape test/*.js"