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-rw-r--r--raindrops.gemspec2
1 files changed, 1 insertions, 1 deletions
diff --git a/raindrops.gemspec b/raindrops.gemspec
index c2e4ed9..356bff2 100644
--- a/raindrops.gemspec
+++ b/raindrops.gemspec
@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('test-unit', '~> 3.0')
   s.add_development_dependency('io-extra', [ '~> 1.2', '>= 1.2.3'])
   s.add_development_dependency('posix_mq', '~> 2.0')
-  s.add_development_dependency('rack', '~> 1.2')
+  s.add_development_dependency('rack', [ '>= 1.2', '< 3.0' ])
   s.add_development_dependency('olddoc', '~> 1.0')
 
   s.licenses = %w(LGPL-2.1+)