diff --git a/package.json b/package.json
index 9d2e2da..c64ebd8 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,8 @@
   "main"           : "index.js",
 
   "dependencies"   : {
-    "eventemitter3"      : "*"
+    "eventemitter3"      : "0.x.x",
+    "requires-port"      : "0.x.x"
   },
   "devDependencies": {
     "mocha"              : "*",
@@ -26,7 +27,7 @@
     "coveralls"          : "*",
     "mocha-lcov-reporter": "*",
     "blanket"            : "*",
-    "ws"                 : "*",
+    "ws"                 : "~0.5.0",
     "socket.io"          : "*",
     "socket.io-client"   : "*",
     "async"              : "*"