diff --git a/src/ruby/grpc.gemspec b/src/ruby/grpc.gemspec
index 2ce242dd0b1..c479cc96167 100755
--- a/src/ruby/grpc.gemspec
+++ b/src/ruby/grpc.gemspec
@@ -25,7 +25,7 @@ Gem::Specification.new do |s|
   s.add_dependency 'logging', '~> 1.8'
   s.add_dependency 'jwt', '~> 1.2.1'
   s.add_dependency 'minitest', '~> 5.4'  # reqd for interop tests
-  s.add_dependency 'multijson', '1.10.1'
+  s.add_dependency 'multi_json', '1.10.1'
   s.add_dependency 'signet', '~> 0.6.0'
   s.add_dependency 'xray', '~> 1.1'