diff --git a/lib/rgeo/geo_json.rb b/lib/rgeo/geo_json.rb
index a5a7146..dec3f7c 100644
--- a/lib/rgeo/geo_json.rb
+++ b/lib/rgeo/geo_json.rb
@@ -5,4 +5,4 @@
 require "rgeo/geo_json/entities"
 require "rgeo/geo_json/coder"
 require "rgeo/geo_json/interface"
-require "json"
+require "multi_json"
diff --git a/lib/rgeo/geo_json/coder.rb b/lib/rgeo/geo_json/coder.rb
index df56659..ea62964 100644
--- a/lib/rgeo/geo_json/coder.rb
+++ b/lib/rgeo/geo_json/coder.rb
@@ -66,7 +66,7 @@ def decode(input)
           input = input.read rescue nil
         end
         if input.is_a?(String)
-          input = JSON.parse(input)
+          input = MultiJson.load(input)
         end
         return unless input.is_a?(Hash)
 
diff --git a/rgeo-geojson.gemspec b/rgeo-geojson.gemspec
index 2220119..6c3109c 100644
--- a/rgeo-geojson.gemspec
+++ b/rgeo-geojson.gemspec
@@ -20,6 +20,7 @@ Gem::Specification.new do |spec|
   spec.required_ruby_version = ">= 2.3.0"
 
   spec.add_dependency "rgeo", ">= 1.0.0"
+  spec.add_dependency "multi_json", "~> 1.15"
 
   spec.add_development_dependency "minitest", "~> 5.8"
   spec.add_development_dependency "rake", "~> 12.0"