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-rw-r--r--zbatery.gemspec2
1 files changed, 1 insertions, 1 deletions
diff --git a/zbatery.gemspec b/zbatery.gemspec
index 203a705..029a36c 100644
--- a/zbatery.gemspec
+++ b/zbatery.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |s|
   #   espace-neverblock + eventmachine
   #   async_sinatra + sinatra + eventmachine
   #
-  s.add_dependency(%q<rainbows>, ["~> 4.0"])
+  s.add_dependency(%q<rainbows>, ["~> 4.3"])
   s.add_development_dependency(%q<wrongdoc>, "~> 1.6")
   s.add_development_dependency(%q<isolate>, "~> 3.1")