diff --git a/Gemfile.lock b/Gemfile.lock
index bd93ea0..de1a59e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -265,9 +265,9 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  bundler (~> 1.3)
+  bundler (~> 2.1.4)
   danger-xcov!
   rake
 
 BUNDLED WITH
-   1.17.3
+   2.1.4
diff --git a/danger-xcov.gemspec b/danger-xcov.gemspec
index f992aea..6e19acc 100644
--- a/danger-xcov.gemspec
+++ b/danger-xcov.gemspec
@@ -18,6 +18,6 @@ Gem::Specification.new do |spec|
 
   spec.add_dependency 'danger', '>= 2.1'
   spec.add_dependency 'xcov', '>= 1.8.0'
-  spec.add_development_dependency 'bundler', '~> 1.3'
+  spec.add_development_dependency 'bundler', '~> 2.1.4'
   spec.add_development_dependency 'rake'
 end