1 files changed, 1 insertions, 1 deletions

diff --git a/util.rb b/util.rb
index d04f823..2111780 100644
--- a/util.rb
+++ b/util.rb
@@ -1,5 +1,5 @@
 require 'zipf'
-require 'trollop'
+require 'optimist'
 
 def read_stopwords_file fn
   stopwords = {}