diff --git a/vendor/zlib b/vendor/zlib
index 21767c654..09155eaa2 160000
--- a/vendor/zlib
+++ b/vendor/zlib
@@ -1 +1 @@
-Subproject commit 21767c654d31d2dccdde4330529775c6c5fd5389
+Subproject commit 09155eaa2f9270dc4ed1fa13e2b4b2613e6e4851