diff --git a/src/js/stores/LevelStore.js b/src/js/stores/LevelStore.js
index edacc524..3b160c3e 100644
--- a/src/js/stores/LevelStore.js
+++ b/src/js/stores/LevelStore.js
@@ -89,7 +89,7 @@ AppConstants.StoreSubscribePrototype,
   },
 
   getSequences: function() {
-    return _.keys(levelSequences);
+    return Object.keys(levelSequences);
   },
 
   getLevelsInSequence: function(sequenceName) {
diff --git a/src/js/views/builderViews.js b/src/js/views/builderViews.js
index 9d2ba96f..89a6f8b9 100644
--- a/src/js/views/builderViews.js
+++ b/src/js/views/builderViews.js
@@ -295,7 +295,7 @@ var MultiViewBuilder = ContainedBase.extend({
 
     this.JSON = {
       views: this.getChildViews(),
-      supportedViews: _.keys(this.typeToConstructor)
+      supportedViews: Object.keys(this.typeToConstructor)
     };
 
     this.container = new ModalTerminal({
@@ -416,4 +416,3 @@ exports.DemonstrationBuilder = DemonstrationBuilder;
 exports.TextGrabber = TextGrabber;
 exports.MultiViewBuilder = MultiViewBuilder;
 exports.MarkdownPresenter = MarkdownPresenter;
-
diff --git a/src/js/views/rebaseView.js b/src/js/views/rebaseView.js
index 49403561..accae218 100644
--- a/src/js/views/rebaseView.js
+++ b/src/js/views/rebaseView.js
@@ -78,7 +78,7 @@ var InteractiveRebaseView = ContainedBase.extend({
 
   render: function() {
     var json = {
-      num: _.keys(this.rebaseMap).length,
+      num: Object.keys(this.rebaseMap).length,
       solutionOrder: this.options.initialCommitOrdering
     };