diff --git a/dm-types.gemspec b/dm-types.gemspec
index 692d41c..b0f9283 100644
--- a/dm-types.gemspec
+++ b/dm-types.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |gem|
   gem.add_runtime_dependency('bcrypt',      '~> 3.0')
   gem.add_runtime_dependency('dm-core',     '~> 1.3.0.beta')
   gem.add_runtime_dependency('fastercsv',   '~> 1.5.4')
-  gem.add_runtime_dependency('multi_json', '>= 1.7.7')
+  gem.add_runtime_dependency('multi_json', '>= 1.3.2')
   gem.add_runtime_dependency('stringex', '>= 2.0.8')
   gem.add_runtime_dependency('safe_yaml',   '~> 0.6.1')
   gem.add_runtime_dependency('uuidtools',   '~> 2.1.2')