diff --git a/build.yaml b/build.yaml
index a8e0c6a..1bbcc1e 100644
--- a/build.yaml
+++ b/build.yaml
@@ -328,6 +328,7 @@
   - src/core/ext/client_config/client_channel_factory.h
   - src/core/ext/client_config/client_config.h
   - src/core/ext/client_config/connector.h
+  - src/core/ext/client_config/http_connect_handshaker.h
   - src/core/ext/client_config/initial_connect_string.h
   - src/core/ext/client_config/lb_policy.h
   - src/core/ext/client_config/lb_policy_factory.h
@@ -348,6 +349,7 @@
   - src/core/ext/client_config/client_config_plugin.c
   - src/core/ext/client_config/connector.c
   - src/core/ext/client_config/default_initial_connect_string.c
+  - src/core/ext/client_config/http_connect_handshaker.c
   - src/core/ext/client_config/initial_connect_string.c
   - src/core/ext/client_config/lb_policy.c
   - src/core/ext/client_config/lb_policy_factory.c