diff --git a/vendor/valgrind b/vendor/valgrind
index 7d98b64a..7926d0dc 160000
--- a/vendor/valgrind
+++ b/vendor/valgrind
@@ -1 +1 @@
-Subproject commit 7d98b64a47e96dad7a618822a99425d7800cc233
+Subproject commit 7926d0dca6a768f29c46a4077092ad6b229be4bd
diff --git a/vendor/zlib b/vendor/zlib
index d1e32cf5..8dc83b7c 160000
--- a/vendor/zlib
+++ b/vendor/zlib
@@ -1 +1 @@
-Subproject commit d1e32cf59c1fc95fe7ccecedbbd2098594a39dee
+Subproject commit 8dc83b7c51d5014de10e0196eac9b4dd8096fc1c