diff --git a/build.json b/build.json
index 0e3152f..e615826 100644
--- a/build.json
+++ b/build.json
@@ -99,6 +99,7 @@
         "src/core/channel/census_filter.c",
         "src/core/channel/channel_args.c",
         "src/core/channel/channel_stack.c",
+        "src/core/channel/child_channel.c",
         "src/core/channel/client_channel.c",
         "src/core/channel/client_setup.c",
         "src/core/channel/connected_channel.c",
@@ -189,6 +190,7 @@
         "src/core/channel/census_filter.h",
         "src/core/channel/channel_args.h",
         "src/core/channel/channel_stack.h",
+        "src/core/channel/child_channel.h",
         "src/core/channel/client_channel.h",
         "src/core/channel/client_setup.h",
         "src/core/channel/connected_channel.h",