diff --git a/packages/networks/bitcoin/package.json b/packages/networks/bitcoin/package.json
index 4e2f1c5..d5888c1 100644
--- a/packages/networks/bitcoin/package.json
+++ b/packages/networks/bitcoin/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@multiplechain/bitcoin",
-    "version": "0.4.4",
+    "version": "0.4.5",
     "type": "module",
     "main": "dist/index.cjs",
     "module": "dist/index.es.js",
diff --git a/packages/networks/bitcoin/src/services/TransactionSigner.ts b/packages/networks/bitcoin/src/services/TransactionSigner.ts
index 4230e8c..e885281 100644
--- a/packages/networks/bitcoin/src/services/TransactionSigner.ts
+++ b/packages/networks/bitcoin/src/services/TransactionSigner.ts
@@ -55,7 +55,7 @@ export class TransactionSigner implements TransactionSignerInterface<Transaction
         try {
             const result = await axios({
                 method: 'POST',
-                url: `https://blockstream.info/testnet/api/tx`,
+                url: this.provider.createEndpoint('tx'),
                 data: this.signedData
             })
             return result.data as TransactionId