diff --git a/third_party/pigweed b/third_party/pigweed
index b5ee28a..9b1e38c 160000
--- a/third_party/pigweed
+++ b/third_party/pigweed
@@ -1 +1 @@
-Subproject commit b5ee28a91525dd5e405aaff223648dd1e9a870ab
+Subproject commit 9b1e38c0b5cbefce1f1ceabefbf63a3175b4823f