diff --git a/terraforming.gemspec b/terraforming.gemspec
index 59ad04e0..3287674a 100644
--- a/terraforming.gemspec
+++ b/terraforming.gemspec
@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "aws-sdk", "~> 2.5.1"
-  spec.add_dependency "oj", "~> 2.15.0"
+  spec.add_dependency "oj", "~> 2.17.1"
   spec.add_dependency "ox", "~> 2.4.0"
   spec.add_dependency "thor"