diff --git a/lib/make_it_so/rails/app_builder.rb b/lib/make_it_so/rails/app_builder.rb
index ed2fe46..6e8ffb9 100644
--- a/lib/make_it_so/rails/app_builder.rb
+++ b/lib/make_it_so/rails/app_builder.rb
@@ -42,7 +42,7 @@ def eliminate_byebug
       end
 
       def react
-        self.gem 'webpacker', '~> 3.2'
+        self.gem 'webpacker', '~> 3.3'
 
         after_bundle do
           rake 'webpacker:install'
@@ -52,7 +52,7 @@ def react
           parsed_json = JSON.parse(unparsed_json)
 
           modify_json(package_json_file) do |json|
-            ["dependencies"].each do |key|
+            ["dependencies", "devDependencies"].each do |key|
               json[key] ||= {}
               json[key].merge!(parsed_json[key])
             end
diff --git a/snippets/rails/react_dependencies.json b/snippets/rails/react_dependencies.json
index 03c8728..d535f7a 100644
--- a/snippets/rails/react_dependencies.json
+++ b/snippets/rails/react_dependencies.json
@@ -1,9 +1,13 @@
 {
   "dependencies": {
-    "@rails/webpacker": "~3.2.0",
+    "@rails/webpacker": "~3.3.0",
     "babel-preset-react": "~6.24.1",
     "prop-types": "~15.6.0",
     "react": "~15.4.2",
     "react-dom": "~15.4.2"
+  },
+  "devDependencies": {
+    "webpack-cli": "^2.0.10",
+    "webpack-dev-server": "^2.11.1"
   }
 }