1 files changed, 2 insertions, 2 deletions
diff --git a/per-sentence-bleu b/per-sentence-bleu
index e70db2b..257eb3a 100755
--- a/per-sentence-bleu
+++ b/per-sentence-bleu
@@ -1,10 +1,10 @@
 #!/usr/bin/env ruby
 
 require 'zipf'
-require 'trollop'
+require 'optimist'
 
 def main
-  conf = Trollop::options do
+  conf = Optimist::options do
     opt :input, "input", :type => :string, :default => '-'
     opt :references, "references", :type => :string, :required => true
     opt :len_hack, "hack of Nakov et al", :type => :int, :default => 0