diff --git a/lib/react/rails/railtie.rb b/lib/react/rails/railtie.rb
index a880e048b..d47873123 100644
--- a/lib/react/rails/railtie.rb
+++ b/lib/react/rails/railtie.rb
@@ -42,10 +42,18 @@ class Railtie < ::Rails::Railtie
                    (app.config.react.addons ? '-with-addons' : '') +
                    (app.config.react.variant == :production ? '.min.js' : '.js')
         FileUtils.mkdir_p(tmp_path)
+
+        # Copy over files and set permissions so subsequent deploys can overwrite files
         FileUtils.cp(::React::Source.bundled_path_for(filename),
-                     tmp_path.join('react.js'))
+                    tmp_path.join('react.js'))
+        FileUtils.chmod("u=rw,g=rw", 
+                    tmp_path.join("react.js")) if File.stat(tmp_path.join("react.js")).owned?
+        
         FileUtils.cp(::React::Source.bundled_path_for('JSXTransformer.js'),
-                     tmp_path.join('JSXTransformer.js'))
+                    tmp_path.join('JSXTransformer.js'))
+        FileUtils.chmod("u=rw,g=rw",
+                    tmp_path.join("JSXTransformer.js")) if File.stat(tmp_path.join("JSXTransformer.js")).owned?
+
         app.assets.prepend_path tmp_path
 
         # Allow overriding react files that are not based on environment