diff --git a/third_party/pigweed b/third_party/pigweed
index f463acd..40b9db0 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit f463acd51147efa06d4857be1ae0a7ea64aafc23
+Subproject commit 40b9db09c7b1e46320d2733d0cbdb646c0c56e3d