generate_projects.sh
diff --git a/src/ruby/ext/grpc/rb_grpc_imports.generated.h b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
index d00e75c..908abd7 100644
--- a/src/ruby/ext/grpc/rb_grpc_imports.generated.h
+++ b/src/ruby/ext/grpc/rb_grpc_imports.generated.h
@@ -407,10 +407,10 @@
 typedef void(*grpc_server_credentials_set_auth_metadata_processor_type)(grpc_server_credentials* creds, grpc_auth_metadata_processor processor);
 extern grpc_server_credentials_set_auth_metadata_processor_type grpc_server_credentials_set_auth_metadata_processor_import;
 #define grpc_server_credentials_set_auth_metadata_processor grpc_server_credentials_set_auth_metadata_processor_import
-typedef grpc_alts_credentials_options*(*grpc_alts_credentials_client_options_create_type)();
+typedef grpc_alts_credentials_options*(*grpc_alts_credentials_client_options_create_type)(void);
 extern grpc_alts_credentials_client_options_create_type grpc_alts_credentials_client_options_create_import;
 #define grpc_alts_credentials_client_options_create grpc_alts_credentials_client_options_create_import
-typedef grpc_alts_credentials_options*(*grpc_alts_credentials_server_options_create_type)();
+typedef grpc_alts_credentials_options*(*grpc_alts_credentials_server_options_create_type)(void);
 extern grpc_alts_credentials_server_options_create_type grpc_alts_credentials_server_options_create_import;
 #define grpc_alts_credentials_server_options_create grpc_alts_credentials_server_options_create_import
 typedef void(*grpc_alts_credentials_client_options_add_target_service_account_type)(grpc_alts_credentials_options* options, const char* service_account);