diff --git a/third_party/pigweed b/third_party/pigweed
index 4f0412d..ac64a18 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit 4f0412dae17b20affc33d7162d584175861524be
+Subproject commit ac64a18ef887e4ba2387ed217aafa2dc45e201e0