diff --git a/README.md b/README.md
index b9f1eafb3d5da1e32b66d7e2fc5e9a79d6f6a1c1..772bf75048f5299960bf16df940be7a7b609b9d8 100644
--- a/README.md
+++ b/README.md
@@ -91,12 +91,12 @@ On **Ubuntu**, run the following:
 		sudo ruby setup.rb
 		sudo ln -s /usr/bin/gem1.8 /usr/bin/gem
 
-On **Mac OS X**, RubyGems comes preinstalled; however, you might need to update it for use with the latest Bundler.  To update RubyGems, run `gem update --system`.
+On **Mac OS X**, RubyGems comes preinstalled; however, you might need to update it for use with the latest Bundler.  To update RubyGems, run `sudo gem update --system`.
 
 
 ### Bundler
 
-After RubyGems is updated, simply run `gem install bundler` to get Bundler.
+After RubyGems is updated, simply run `sudo gem install bundler` to get Bundler.
 
 
 ## Getting Diaspora