diff --git a/openidm-ui/openidm-ui-admin/package.json b/openidm-ui/openidm-ui-admin/package.json
index 1d75960b75..e34753408a 100644
--- a/openidm-ui/openidm-ui-admin/package.json
+++ b/openidm-ui/openidm-ui-admin/package.json
@@ -16,7 +16,7 @@
     "babel-preset-es2015": "^6.18.0",
     "eslint": "1.10.3",
     "eslint-formatter-warning-summary": "1.0.1",
-    "grunt": "1.0.4",
+    "grunt": ">=1.5.3",
     "grunt-babel": "6.0.0",
     "grunt-cli": "1.2.0",
     "grunt-contrib-copy": "1.0.0",
diff --git a/openidm-ui/openidm-ui-api/package.json b/openidm-ui/openidm-ui-api/package.json
index 8d28f0b741..3c82a025dd 100644
--- a/openidm-ui/openidm-ui-api/package.json
+++ b/openidm-ui/openidm-ui-api/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.2",
   "private": true,
   "devDependencies": {
-    "grunt": "1.0.4",
+    "grunt": ">=1.5.3",
     "grunt-cli": "1.2.0",
     "grunt-contrib-copy": "1.0.0",
     "swagger-ui": "2.2.6",
diff --git a/openidm-ui/openidm-ui-common/package.json b/openidm-ui/openidm-ui-common/package.json
index 6433e332be..1a7270c723 100644
--- a/openidm-ui/openidm-ui-common/package.json
+++ b/openidm-ui/openidm-ui-common/package.json
@@ -13,7 +13,7 @@
     "babel-plugin-transform-es2015-template-literals": "^6.8.0",
     "eslint": "1.10.3",
     "eslint-formatter-warning-summary": "1.0.1",
-    "grunt": "1.0.4",
+    "grunt": ">=1.5.3",
     "grunt-cli": "1.2.0",
     "grunt-eslint": "17.3.2"
   }
diff --git a/openidm-ui/openidm-ui-enduser/package.json b/openidm-ui/openidm-ui-enduser/package.json
index 6e08b2d641..b0575e3a57 100644
--- a/openidm-ui/openidm-ui-enduser/package.json
+++ b/openidm-ui/openidm-ui-enduser/package.json
@@ -16,7 +16,7 @@
     "babel-preset-es2015": "^6.18.0",
     "eslint": "1.10.3",
     "eslint-formatter-warning-summary": "1.0.1",
-    "grunt": "1.0.4",
+    "grunt": ">=1.5.3",
     "grunt-babel": "6.0.0",
     "grunt-cli": "1.2.0",
     "grunt-contrib-copy": "1.0.0",
diff --git a/openidm-ui/package.json b/openidm-ui/package.json
index 3d81fed9f5..ad07e5b3b5 100644
--- a/openidm-ui/package.json
+++ b/openidm-ui/package.json
@@ -4,7 +4,7 @@
   "version": "0.0.1",
   "private": true,
   "devDependencies": {
-    "grunt": "1.0.4",
+    "grunt": ">=1.5.3",
     "grunt-nightwatch": "0.5.2",
     "grunt-parallel": "0.4.1",
     "request": "^2.72.0"