diff --git a/.vpython b/.vpython
index 92c9c51346..df838dccf8 100644
--- a/.vpython
+++ b/.vpython
@@ -52,7 +52,7 @@ wheel: <
 
 wheel: <
   name: "infra/python/wheels/six-py2_py3"
-  version: "version:1.10.0"
+  version: "version:1.15.0"
 >
 wheel: <
   name: "infra/python/wheels/pbr-py2_py3"