diff --git a/dm-types.gemspec b/dm-types.gemspec
index f314e83..d8d9ed9 100644
--- a/dm-types.gemspec
+++ b/dm-types.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('dm-core',     '~> 1.3.0.beta')
   gem.add_runtime_dependency('fastercsv',   '~> 1.5.4')
   gem.add_runtime_dependency('multi_json',  '~> 1.3.2')
-  gem.add_runtime_dependency('safe_yaml',   '~> 0.6.1')
+  gem.add_runtime_dependency('safe_yaml',   '~> 1.0.0')
   gem.add_runtime_dependency('stringex',    '~> 1.4')
   gem.add_runtime_dependency('uuidtools',   '~> 2.1.2')