diff --git a/atomic-interactions_en.html b/atomic-interactions_en.html
index 7590144..8b9aba6 100644
--- a/atomic-interactions_en.html
+++ b/atomic-interactions_en.html
@@ -29,7 +29,7 @@
         "url": "https://github.com/phetsims/atomic-interactions.git"
       },
       "devDependencies": {
-        "grunt": "~1.0.0"
+        "grunt": "~1.1.0"
       },
       "phet": {
         "requirejsNamespace": "ATOMIC_INTERACTIONS",
diff --git a/package.json b/package.json
index a653ef9..33bb8c3 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "url": "https://github.com/phetsims/atomic-interactions.git"
   },
   "devDependencies": {
-    "grunt": "~1.0.0"
+    "grunt": "~1.1.0"
   },
   "phet": {
     "requirejsNamespace": "ATOMIC_INTERACTIONS",