diff --git a/README.md b/README.md
index e689be4..fc31030 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 ## Create Genesis Block Proof with Node.js
 
+**Tested with Node.js version 8.x.x**
 
 ## setup
 
diff --git a/package.json b/package.json
index 8ffbaa8..dcee1ea 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
   "homepage": "https://github.com/nasa8x/node-genesis-block#readme",
   "dependencies": {
     "crypto": "^1.0.1",
-    "multi-hashing": "https://github.com/nasa8x/node-multi-hashing.git",
-    "yargs": "^11.0.0"
+    "multi-hashing": "git+https://github.com/nasa8x/node-multi-hashing.git",
+    "yargs": "^11.1.0"
   }
 }