diff --git a/google_drive.gemspec b/google_drive.gemspec
index 6b3eb0e..550ef95 100644
--- a/google_drive.gemspec
+++ b/google_drive.gemspec
@@ -14,9 +14,9 @@ Gem::Specification.new do |s|
   s.require_paths = ['lib']
 
   s.add_dependency('nokogiri', ['>= 1.5.3', '< 2.0.0'])
-  s.add_dependency('google-apis-drive_v3', '>= 0.5.0', '< 1.0.0')
-  s.add_dependency('google-apis-sheets_v4', '>= 0.4.0', '< 1.0.0')
-  s.add_dependency('googleauth', ['>= 0.5.0', '< 1.0.0'])
+  s.add_dependency('google-apis-drive_v3', '>= 0.5.0', '< 2.0.0')
+  s.add_dependency('google-apis-sheets_v4', '>= 0.4.0', '< 2.0.0')
+  s.add_dependency('googleauth', ['>= 0.5.0', '< 2.0.0'])
   s.add_development_dependency('test-unit', ['>= 3.0.0', '< 4.0.0'])
   s.add_development_dependency('rake', ['>= 0.8.0'])
   s.add_development_dependency('rspec-mocks', ['>= 3.4.0', '< 4.0.0'])