diff --git a/BUILD b/BUILD
index b19ecec62f4580f6f42258bdeac31093fa61b2f0..aae7b6ffbec97801463bfe08bc4f6fcd162e85d9 100644
--- a/BUILD
+++ b/BUILD
@@ -605,6 +605,7 @@ grpc_cc_library(
         "src/core/lib/iomgr/error.h",
         "src/core/lib/iomgr/error_internal.h",
         "src/core/lib/iomgr/ev_epoll1_linux.h",
+        "src/core/lib/iomgr/ev_epollsig_linux.h",
         "src/core/lib/iomgr/ev_epollex_linux.h",
         "src/core/lib/iomgr/is_epollexclusive_available.h",
         "src/core/lib/iomgr/sys_epoll_wrapper.h",