2 files changed, 2 insertions, 2 deletions
diff --git a/README.md b/README.md
index 3e509f4..9f894c8 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ results are cached with _memcached_ [5].
 
 You'll also need the following _ruby gems_:
  * https://rubygems.org/gems/memcached
- * http://rubygems.org/gems/nlp_ruby
+ * http://rubygems.org/gems/zipf
  * http://trollop.rubyforge.org/
 
 
diff --git a/rebol.rb b/rebol.rb
index 37d4a17..04ace1c 100755
--- a/rebol.rb
+++ b/rebol.rb
@@ -1,6 +1,6 @@
 #!/usr/bin/env ruby
 
-require 'nlp_ruby'
+require 'zipf'
 require 'trollop'
 require 'tempfile'
 require 'memcached'