Build issue resolve

package.json

@@ -37,7 +37,7 @@
     "@ngx-translate/core": "^9.1.1",
     "@ngx-translate/http-loader": "^2.0.1",
     "angular2-moment": "1.6.0",
-    "angularfire2": "^5.0.0-rc.3",
+    "angularfire2": "5.0.0-rc.3",
     "card.io.cordova.mobilesdk": "^2.1.0",
     "com.paypal.cordova.mobilesdk": "^3.5.0",
     "cordova-android": "6.4.0",
@@ -58,7 +58,7 @@
     "cordova-plugin-whitelist": "^1.3.3",
     "cordova-plugin-x-socialsharing": "^5.4.1",
     "es6-promise-plugin": "^4.2.2",
-    "firebase": "^4.6.2",
+    "firebase": "4.6.2",
     "ionic-angular": "^3.9.2",
     "ionic-plugin-keyboard": "^2.2.1",
     "ionic2-rating": "1.2.2",
@@ -126,4 +126,4 @@
       "call-number": {}
     }
   }
-}
+}