libra_client.gemspec in libra_client-0.1.6 vs libra_client.gemspec in libra_client-0.1.7

@@ -38,9 +38,10 @@
 
   spec.add_development_dependency "bundler", "~> 2.0"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "minitest", "~> 5.0"
   spec.add_development_dependency "byebug", "~> 11.0"
+  spec.add_development_dependency "grpc-tools", "~> 1.23"
 
   spec.add_dependency "grpc", "~> 1.23"
   spec.add_dependency "canoser", "~> 0.1.2"
   spec.add_dependency "rest-client", "~> 2.0"
   #spec.add_dependency "openssl", "~> 3.0.0" #not ready, need SHA3 support.