diff --git a/lmdb-sys/lmdb b/lmdb-sys/lmdb
index ef6dc461..17c76ae9 160000
--- a/lmdb-sys/lmdb
+++ b/lmdb-sys/lmdb
@@ -1 +1 @@
-Subproject commit ef6dc46199b6e7db4b648f9823d16ad077767507
+Subproject commit 17c76ae9d56b0b7cf5c3839ea240ad4a868a7ed1