diff --git a/ipc_shm b/ipc_shm
index f8652bd29..591c186d5 160000
--- a/ipc_shm
+++ b/ipc_shm
@@ -1 +1 @@
-Subproject commit f8652bd297f0c998b567c0505fc7d965f184172c
+Subproject commit 591c186d5a95d7ce3ab26e003d0eb33095fffb18