diff --git a/Gemfile b/Gemfile
index 405c4df..a76b2c1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,11 +1,11 @@
 source 'https://rubygems.org'
 gem 'clipboard', '~> 1.1', '>= 1.1.1'
 gem 'colorize',  '~> 0.8', '>= 0.8.1'
-gem 'gpgme',     '~> 2.0', '>= 2.0.12'
+gem 'gpgme',     '~> 2.0', '>= 2.0.14'
 gem 'highline',  '~> 1.7', '>= 1.7.8'
-gem 'i18n',      '~> 0.7', '>= 0.7.0'
+gem 'i18n',      '~> 0.9', '>= 0.9.1'
 gem 'locale',    '~> 2.1', '>= 2.1.2'
-gem 'rotp',      '~> 3.1', '>= 3.1.0'
+gem 'rotp',      '~> 3.3', '>= 3.3.0'
 
 group :development do
   gem 'rubocop', '0.50.0'
diff --git a/mpw.gemspec b/mpw.gemspec
index dfb4825..abcb375 100644
--- a/mpw.gemspec
+++ b/mpw.gemspec
@@ -18,11 +18,11 @@ Gem::Specification.new do |spec|
 
   spec.required_ruby_version = '>= 2.1'
 
-  spec.add_dependency 'i18n',      '~> 0.7', '>= 0.7.0'
-  spec.add_dependency 'gpgme',     '~> 2.0', '>= 2.0.12'
+  spec.add_dependency 'i18n',      '~> 0.9', '>= 0.9.1'
+  spec.add_dependency 'gpgme',     '~> 2.0', '>= 2.0.14'
   spec.add_dependency 'highline',  '~> 1.7', '>= 1.7.8'
   spec.add_dependency 'locale',    '~> 2.1', '>= 2.1.2'
   spec.add_dependency 'colorize',  '~> 0.8', '>= 0.8.1'
   spec.add_dependency 'clipboard', '~> 1.1', '>= 1.1.1'
-  spec.add_dependency 'rotp',      '~> 3.1', '>= 3.1.0'
+  spec.add_dependency 'rotp',      '~> 3.3', '>= 3.3.0'
 end