diff --git a/composer.json b/composer.json
index e425f72..fa179d5 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "ext-gd": "*",
         "ext-dom": "*",
 
-        "blocktrail/bitcoin-lib": "1.0.19",
+        "blocktrail/bitcoin-lib": "1.0.20",
 
         "guzzlehttp/guzzle": "5.2.*",
         "99designs/http-signatures-guzzlehttp": "1.1.0",