diff --git a/package.json b/package.json
index 5b116dd..f565791 100644
--- a/package.json
+++ b/package.json
@@ -10,22 +10,22 @@
     "body-parser": "^1.12.4",
     "consolidate": "^0.15.1",
     "express": "^4.12.3",
-    "grunt": "~1.0.4",
-    "grunt-cli": "^1.3.2",
+    "grunt": "~1.6.0",
+    "grunt-cli": "^1.4.0",
     "grunt-contrib-clean": "~2.0.0",
-    "grunt-contrib-concat": "~1.0.1",
+    "grunt-contrib-concat": "~2.0.0",
     "grunt-contrib-copy": "~1.0.0",
-    "grunt-contrib-cssmin": "~3.0.0",
+    "grunt-contrib-cssmin": "~4.0.0",
     "grunt-contrib-htmlmin": "~3.1.0",
     "grunt-contrib-imagemin": "3.1.0",
     "grunt-contrib-jshint": "~2.1.0",
-    "grunt-contrib-less": "2.0.0",
-    "grunt-contrib-uglify": "~4.0.1",
+    "grunt-contrib-less": "2.1.0",
+    "grunt-contrib-uglify": "~5.2.1",
     "grunt-image-resize": "~1.0.0",
     "grunt-json-wrapper": "0.0.3",
     "grunt-ngmin": "~0.0.2",
     "grunt-usemin": "~3.1.1",
-    "handlebars": "^4.5.3",
+    "handlebars": "^4.7.4",
     "matchdep": "~2.0.0",
     "sendgrid": "^5.1.1",
     "st": "^2.0.0",