diff --git a/src/core/ext/filters/client_channel/subchannel.cc b/src/core/ext/filters/client_channel/subchannel.cc
index f357f9f121d84..c679aee89503d 100644
--- a/src/core/ext/filters/client_channel/subchannel.cc
+++ b/src/core/ext/filters/client_channel/subchannel.cc
@@ -25,6 +25,7 @@
 #include <cstring>
 #include <memory>
 #include <new>
+#include <type_traits>
 #include <utility>
 
 #include "absl/status/statusor.h"