diff --git a/src/zlib b/src/zlib
index 09155eaa..51b7f2ab 160000
--- a/src/zlib
+++ b/src/zlib
@@ -1 +1 @@
-Subproject commit 09155eaa2f9270dc4ed1fa13e2b4b2613e6e4851
+Subproject commit 51b7f2abdade71cd9bb0e7a373ef2610ec6f9daf