Modules' version is now fixed

package.json

@@ -27,23 +27,23 @@
     "url": "https://github.com/c-geek/ucoin/issues"
   },
   "dependencies": {
-    "express": "~3.4.7",
-    "commander": "~2.1.0",
-    "mongoose": "~3.8.4",
-    "async": "~0.2.9",
-    "sha1": "~1.1.0",
-    "merkle": "~0.1.0",
-    "underscore": "~1.5.2",
+    "express": "3.4.7",
+    "commander": "2.1.0",
+    "mongoose": "3.8.4",
+    "async": "0.2.9",
+    "sha1": "1.1.0",
+    "merkle": "0.1.0",
+    "underscore": "1.5.2",
     "vucoin": "0.22.1",
-    "request": "~2.31.0",
-    "log4js": "~0.6.9",
-    "moment": "~2.6.0",
-    "inquirer": "~0.5.0",
+    "request": "2.31.0",
+    "log4js": "0.6.9",
+    "moment": "2.6.0",
+    "inquirer": "0.5.0",
     "event-stream": "3.1.5",
     "tweetnacl": "0.11.2",
     "scrypt": "3.0.1",
-    "bindings": "~1.2.1",
-    "nan": "^1.3.0",
+    "bindings": "1.2.1",
+    "nan": "1.3.0",
     "naclb": "0.0.1"
   },
   "devDependencies": {