diff --git a/build.yaml b/build.yaml
index 974ae9cc6bd9be2acec16d931ea36450fa939119..4b9a6f0703083136a1440eed7894b51d6d880127 100644
--- a/build.yaml
+++ b/build.yaml
@@ -4311,6 +4311,9 @@ configs:
   opt:
     CPPFLAGS: -O2
     DEFINES: NDEBUG
+  lto:
+    CPPFLAGS: -O2
+    DEFINES: NDEBUG
   stapprof:
     CPPFLAGS: -O2 -DGRPC_STAP_PROFILER
     DEFINES: NDEBUG