diff --git a/bower.json b/bower.json
index 86381ec..f8f7b1f 100644
--- a/bower.json
+++ b/bower.json
@@ -32,8 +32,8 @@
     "tests"
   ],
   "dependencies": {
-    "underscore": "1.4.4 - 1.7.0",
-    "backbone": "1.1.0 - 1.1.2",
+    "underscore": "1.4.4 - 1.8.3",
+    "backbone": "1.1.0 - 1.2.1",
     "backbone.marionette": "^2.0.0"
   }
 }
diff --git a/package.json b/package.json
index 7b1231c..aebb908 100644
--- a/package.json
+++ b/package.json
@@ -36,8 +36,8 @@
   },
   "homepage": "https://github.com/jmeas/marionette.sliding-view",
   "dependencies": {
-    "underscore": "1.4.4 - 1.7.0",
-    "backbone": "1.0.0 - 1.1.2",
+    "underscore": "1.4.4 - 1.8.3",
+    "backbone": "1.0.0 - 1.2.1",
     "backbone.marionette": "^2.0.0"
   },
   "devDependencies": {