diff --git a/.vpython3 b/.vpython3
index feccd47a2..f90591864 100644
--- a/.vpython3
+++ b/.vpython3
@@ -87,4 +87,11 @@ wheel: <
 wheel: <
   name: "infra/python/wheels/hjson-py2_py3"
   version: "version:3.1.0"
+>
+
+# Used by:
+#   tools/win/DebugVisualizers/PRESUBMIT.py
+wheel: <
+  name: "infra/python/wheels/lxml/${vpython_platform}"
+  version: "version:4.9.3"
 >
\ No newline at end of file