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-rw-r--r--lib/unicorn.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/unicorn.rb b/lib/unicorn.rb
index e7bc9ce..85e4df1 100644
--- a/lib/unicorn.rb
+++ b/lib/unicorn.rb
@@ -2,6 +2,7 @@
 require 'etc'
 require 'stringio'
 require 'kgio'
+require 'io/wait'
 
 begin
   require 'rack'