diff --git a/package.json b/package.json
index fb93a0d..2dcd478 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
   "homepage": "https://github.com/ipld/js-ipld-bitcoin#readme",
   "dependencies": {
     "async": "^2.6.1",
-    "bitcoinjs-lib": "^3.3.2",
+    "bitcoinjs-lib": "^4.0.2",
     "cids": "~0.5.2",
     "git-validate": "^2.2.2",
     "multihashes": "~0.4.12",