diff --git a/src/lib/BitcoinSPV.js b/src/lib/BitcoinSPV.js
index 9076954..6b518cd 100644
--- a/src/lib/BitcoinSPV.js
+++ b/src/lib/BitcoinSPV.js
@@ -1,10 +1,6 @@
 // JS implementation of merkle.py script from [summa-tx/bitcoin-spv] repository.
 //
 // [summa-tx/bitcoin-spv]: https://github.com/summa-tx/bitcoin-spv/
-import Hash256 from "bcrypto/lib/hash256-browser.js"
-import BcryptoMerkle from "bcrypto/lib/merkle.js"
-const { deriveRoot } = BcryptoMerkle
-
 /** @typedef { import("./ElectrumClient.js").default } ElectrumClient */
 
 /**