diff --git a/kiss-tnc.gemspec b/kiss-tnc.gemspec
index 98b93378ea1ebcf10791549fe2985e881554f59d..72a66425acb0f2c9e74ede05a8ccdfb4810ca689 100644
--- a/kiss-tnc.gemspec
+++ b/kiss-tnc.gemspec
@@ -31,7 +31,7 @@ Gem::Specification.new do |spec|
 
     spec.add_dependency 'abstraction', '~> 0.0.4'
     spec.add_dependency 'serialport', '~> 1.3'
-    spec.add_development_dependency 'bundler', '~> 1.13'
+    spec.add_development_dependency 'bundler', '~> 1.7'
     spec.add_development_dependency 'rake', '~> 11.3'
     spec.add_development_dependency 'rdoc', '~> 4.2'
     spec.add_development_dependency 'aruba', '~> 0.14'