diff --git a/github-linguist.gemspec b/github-linguist.gemspec
index 69152aa4..7a1d1ac6 100644
--- a/github-linguist.gemspec
+++ b/github-linguist.gemspec
@@ -16,7 +16,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'charlock_holmes', '~> 0.7.3'
   s.add_dependency 'escape_utils',    '~> 1.1.0'
   s.add_dependency 'mime-types',      '>= 1.19'
-  s.add_dependency 'rugged',          '>= 0.23.0b'
+  s.add_dependency 'rugged',          '0.25.0b10'
 
   s.add_development_dependency 'minitest', '>= 5.0'
   s.add_development_dependency 'mocha'