diff --git a/binding.gyp b/binding.gyp
index 7cc8a58..a710e4c 100644
--- a/binding.gyp
+++ b/binding.gyp
@@ -751,6 +751,7 @@
         'src/core/ext/census/operation.c',
         'src/core/ext/census/placeholders.c',
         'src/core/ext/census/resource.c',
+        'src/core/ext/census/trace_context.c',
         'src/core/ext/census/tracing.c',
         'src/core/plugin_registry/grpc_plugin_registry.c',
       ],