diff --git a/per-thread-mutex b/per-thread-mutex
index 84babffb..e366fb8a 160000
--- a/per-thread-mutex
+++ b/per-thread-mutex
@@ -1 +1 @@
-Subproject commit 84babffb46ee87be51b6f1eed5ba416b807d39ea
+Subproject commit e366fb8a6f20197fc7c4de3d2e9f2ac840716bcd