diff --git a/package.json b/package.json
index 8a82314..e7f86a7 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "async": "^0.9.0",
-    "bitcore": "*",
+    "bitcore": "0.9.6",
     "bitcore-explorers": "^0.9.1",
     "express": "^4.10.0",
     "inherits": "^2.0.1",