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-rw-r--r--lib/rainbows/coolio.rb3
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/rainbows/coolio.rb b/lib/rainbows/coolio.rb
index b62e02b..a993060 100644
--- a/lib/rainbows/coolio.rb
+++ b/lib/rainbows/coolio.rb
@@ -21,6 +21,9 @@ require 'rainbows/coolio_support'
 #
 # This model is mostly compatible with users of "async.callback" in
 # the Rack environment as long as they do not depend on EventMachine.
+#
+# === RubyGem Requirements
+# * cool.io 1.0.0 or later
 module Rainbows::Coolio
   # :stopdoc:
   # keep-alive timeout scoreboard