diff --git a/package.json b/package.json
index 1f3442c67d84db804d45ca76c36cc05ce1544adb..5ccda0e5c2a6c068104cfd4e093443aa95fb7d49 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
   "dependencies": {
     "async": "0.2.9",
     "bindings": "1.2.1",
-    "co": "^4.6.0",
+    "co": "4.6.0",
     "commander": "2.1.0",
     "event-stream": "3.1.5",
     "express": "3.4.7",
@@ -53,26 +53,25 @@
     "request": "2.31.0",
     "scrypt": "4.0.7",
     "sha1": "1.1.0",
-    "socket.io": "^1.3.4",
+    "socket.io": "1.3.4",
     "superagent": "1.4.0",
     "tweetnacl": "0.11.2",
     "underscore": "1.8.3",
     "usage": "0.6.0",
-    "vucoin": "0.25.1",
-    "winston": "1.0.0"
+    "vucoin": "0.25.1"
   },
   "devDependencies": {
-    "coveralls": "^2.11.4",
+    "coveralls": "2.11.4",
     "eslint": "0.21.1",
     "eslint-plugin-mocha": "0.2.2",
-    "istanbul": "^0.4.0",
+    "istanbul": "0.4.0",
     "mocha": "2.2.5",
     "mocha-eslint": "0.1.7",
-    "mocha-lcov-reporter": "^1.0.0",
+    "mocha-lcov-reporter": "1.0.0",
     "request-promise": "0.4.2",
     "sha1": "",
     "should": "",
-    "socket.io-client": "^1.3.6",
+    "socket.io-client": "1.3.6",
     "supertest": ""
   },
   "bin": {