diff --git a/third_party/pigweed b/third_party/pigweed
index e45ec8f..9ed247f 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit e45ec8f7c2d1e77258bd1cc9becdc5191bead5bf
+Subproject commit 9ed247fb40dbdf60a6ace96c33ee1c8004125203