diff --git a/src/zlib b/src/zlib
index cacf7f1d..09155eaa 160000
--- a/src/zlib
+++ b/src/zlib
@@ -1 +1 @@
-Subproject commit cacf7f1d4e3d44d871b605da3b647f07d718623f
+Subproject commit 09155eaa2f9270dc4ed1fa13e2b4b2613e6e4851
diff --git a/src/zlib-ng b/src/zlib-ng
index cf89cf35..2bc66887 160000
--- a/src/zlib-ng
+++ b/src/zlib-ng
@@ -1 +1 @@
-Subproject commit cf89cf35037f152ce7adfeca864656de5d33ea1e
+Subproject commit 2bc66887ddc0c50776811a27be68e34430d665e1