diff --git a/README.md b/README.md
index f5429c0..af548ef 100644
--- a/README.md
+++ b/README.md
@@ -17,23 +17,29 @@ ExecJS supports these runtimes:
 
 A short example:
 
-    require "execjs"
-    ExecJS.eval "'red yellow blue'.split(' ')"
-    # => ["red", "yellow", "blue"]
+``` ruby
+require "execjs"
+ExecJS.eval "'red yellow blue'.split(' ')"
+# => ["red", "yellow", "blue"]
+```
 
 A longer example, demonstrating how to invoke the CoffeeScript compiler:
 
-    require "execjs"
-    require "open-uri"
-    source = open("http://jashkenas.github.com/coffee-script/extras/coffee-script.js").read
+``` ruby
+require "execjs"
+require "open-uri"
+source = open("http://jashkenas.github.com/coffee-script/extras/coffee-script.js").read
 
-    context = ExecJS.compile(source)
-    context.call("CoffeeScript.compile", "square = (x) -> x * x", :bare => true)
-    # => "var square;\nsquare = function(x) {\n  return x * x;\n};"
+context = ExecJS.compile(source)
+context.call("CoffeeScript.compile", "square = (x) -> x * x", :bare => true)
+# => "var square;\nsquare = function(x) {\n  return x * x;\n};"
+```
 
 # Installation
 
-    $ gem install execjs
+```
+$ gem install execjs
+```
 
 
 # FAQ