diff --git a/package-lock.json b/package-lock.json
index 93cb2b1..9e222d3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,7 +6,7 @@
     "": {
       "name": "quantumleap-source-operator",
       "devDependencies": {
-        "grunt": "^1.0.4",
+        "grunt": "^1.5.3",
         "grunt-contrib-clean": "^1.1.0",
         "grunt-contrib-compress": "^1.4.3",
         "grunt-contrib-copy": "^1.0.0",
@@ -2613,9 +2613,9 @@
       "dev": true
     },
     "node_modules/grunt": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.4.1.tgz",
-      "integrity": "sha512-ZXIYXTsAVrA7sM+jZxjQdrBOAg7DyMUplOMhTaspMRExei+fD0BTwdWXnn0W5SXqhb/Q/nlkzXclSi3IH55PIA==",
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.5.3.tgz",
+      "integrity": "sha512-mKwmo4X2d8/4c/BmcOETHek675uOqw0RuA/zy12jaspWqvTp4+ZeQF1W+OTpcbncnaBsfbQJ6l0l4j+Sn/GmaQ==",
       "dev": true,
       "dependencies": {
         "dateformat": "~3.0.3",
@@ -2623,7 +2623,7 @@
         "exit": "~0.1.2",
         "findup-sync": "~0.3.0",
         "glob": "~7.1.6",
-        "grunt-cli": "~1.4.2",
+        "grunt-cli": "~1.4.3",
         "grunt-known-options": "~2.0.0",
         "grunt-legacy-log": "~3.0.0",
         "grunt-legacy-util": "~2.0.1",
@@ -8537,9 +8537,9 @@
       "dev": true
     },
     "grunt": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.4.1.tgz",
-      "integrity": "sha512-ZXIYXTsAVrA7sM+jZxjQdrBOAg7DyMUplOMhTaspMRExei+fD0BTwdWXnn0W5SXqhb/Q/nlkzXclSi3IH55PIA==",
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.5.3.tgz",
+      "integrity": "sha512-mKwmo4X2d8/4c/BmcOETHek675uOqw0RuA/zy12jaspWqvTp4+ZeQF1W+OTpcbncnaBsfbQJ6l0l4j+Sn/GmaQ==",
       "dev": true,
       "requires": {
         "dateformat": "~3.0.3",
@@ -8547,7 +8547,7 @@
         "exit": "~0.1.2",
         "findup-sync": "~0.3.0",
         "glob": "~7.1.6",
-        "grunt-cli": "~1.4.2",
+        "grunt-cli": "~1.4.3",
         "grunt-known-options": "~2.0.0",
         "grunt-legacy-log": "~3.0.0",
         "grunt-legacy-util": "~2.0.1",
diff --git a/package.json b/package.json
index 3a23c61..08420de 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "description": "This package.json file is only used for installing npm dependencies. But this is not an installable node package, but a WireCloud operator. Take a look into src/config.xml for more details about this operator",
   "devDependencies": {
-    "grunt": "^1.0.4",
+    "grunt": "^1.5.3",
     "grunt-contrib-clean": "^1.1.0",
     "grunt-contrib-compress": "^1.4.3",
     "grunt-contrib-copy": "^1.0.0",