diff --git a/undercover.gemspec b/undercover.gemspec
index 888990c..9e451b8 100644
--- a/undercover.gemspec
+++ b/undercover.gemspec
@@ -30,5 +30,5 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'bigdecimal'
   spec.add_dependency 'imagen', '>= 0.2.0'
   spec.add_dependency 'rainbow', '>= 2.1', '< 4.0'
-  spec.add_dependency 'rugged', '>= 0.27', '< 1.8'
+  spec.add_dependency 'rugged', '>= 0.27', '< 1.10'
 end