diff --git a/contrib/db/libmdbx b/contrib/db/libmdbx
index d24df41a..dbb3d9c5 160000
--- a/contrib/db/libmdbx
+++ b/contrib/db/libmdbx
@@ -1 +1 @@
-Subproject commit d24df41a67a3d82bda1c7986ffef1ebff361f430
+Subproject commit dbb3d9c5316184ea78b86f0f9cc95176c40abde8