diff --git a/infra/config/cq.cfg b/infra/config/cq.cfg
index ee073824a1..3b665578fb 100644
--- a/infra/config/cq.cfg
+++ b/infra/config/cq.cfg
@@ -53,8 +53,7 @@ verifiers {
       builders { name: "linux_msan" }
       builders { name: "linux_rel" }
       builders { name: "linux_tsan2" }
-      # TODO(oprypin): Re-enable when https://crbug.com/774973 is fixed.
-      #builders { name: "linux_ubsan" }
+      builders { name: "linux_ubsan" }
       builders { name: "linux_ubsan_vptr" }
       builders { name: "linux_gcc_rel" }
       builders { name: "linux_more_configs" }