diff --git a/BUILD b/BUILD
index 62f0e1d2c5660e4b3cd39d944e46b5f0787cd0a8..055e829be7c3fbb0f3f89a42ce5c2c94faa0d310 100644
--- a/BUILD
+++ b/BUILD
@@ -510,6 +510,7 @@ grpc_cc_library(
         "src/core/lib/iomgr/tcp_windows.c",
         "src/core/lib/iomgr/time_averaged_stats.c",
         "src/core/lib/iomgr/timer_generic.c",
+        "src/core/lib/iomgr/timer_manager.c",
         "src/core/lib/iomgr/timer_heap.c",
         "src/core/lib/iomgr/timer_uv.c",
         "src/core/lib/iomgr/udp_server.c",
@@ -627,6 +628,7 @@ grpc_cc_library(
         "src/core/lib/iomgr/time_averaged_stats.h",
         "src/core/lib/iomgr/timer.h",
         "src/core/lib/iomgr/timer_generic.h",
+        "src/core/lib/iomgr/timer_manager.h",
         "src/core/lib/iomgr/timer_heap.h",
         "src/core/lib/iomgr/timer_uv.h",
         "src/core/lib/iomgr/udp_server.h",