diff --git a/lmdb-sys/lmdb b/lmdb-sys/lmdb
index 4d36c60..6477ba9 160000
--- a/lmdb-sys/lmdb
+++ b/lmdb-sys/lmdb
@@ -1 +1 @@
-Subproject commit 4d36c60963e65aa1a753483fd1cfca305a9002cf
+Subproject commit 6477ba95ca484050a4203051305a31c52aa64896