diff --git a/ui/commons/package.json b/ui/commons/package.json
index 7f23bc505..807c967a3 100644
--- a/ui/commons/package.json
+++ b/ui/commons/package.json
@@ -10,7 +10,7 @@
   "devDependencies": {
     "eslint": "4.18.2",
     "eslint-formatter-warning-summary": "^1.0.1",
-    "grunt": "1.5.3",
+    "grunt": "1.6.2",
     "grunt-cli": "1.4.3",
     "grunt-eslint": "19.0.0",
     "jsdoc": "3.5.5",
diff --git a/ui/mock/package.json b/ui/mock/package.json
index 2a33e9760..da9919309 100644
--- a/ui/mock/package.json
+++ b/ui/mock/package.json
@@ -5,7 +5,7 @@
   "devDependencies": {
     "eslint": "4.18.2",
     "eslint-formatter-warning-summary": "^1.0.1",
-    "grunt": "1.5.3",
+    "grunt": "1.6.2",
     "grunt-cli": "1.4.3",
     "grunt-contrib-less": "1.4.0",
     "grunt-contrib-qunit": "10.1.1",
diff --git a/ui/user/package.json b/ui/user/package.json
index c0f0f60a4..28533d5af 100644
--- a/ui/user/package.json
+++ b/ui/user/package.json
@@ -5,7 +5,7 @@
   "devDependencies": {
     "eslint": "4.18.2",
     "eslint-formatter-warning-summary": "^1.0.1",
-    "grunt": "1.5.3",
+    "grunt": "1.6.2",
     "grunt-cli": "1.4.3",
     "grunt-eslint": "19.0.0",
     "es5-ext": "0.10.53"