Extends signet with an apply/apply! methods
apply/apply! update a hash with an OAuth2 authorization token
diff --git a/src/ruby/grpc.gemspec b/src/ruby/grpc.gemspec
index 3938e0c..0eb8f48 100755
--- a/src/ruby/grpc.gemspec
+++ b/src/ruby/grpc.gemspec
@@ -23,6 +23,7 @@
s.add_dependency 'faraday', '~> 0.9'
s.add_dependency 'google-protobuf', '~> 3.0.0alpha.1.1'
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 'signet', '~> 0.6.0'
s.add_dependency 'xray', '~> 1.1'