diff --git a/zscale b/zscale
index ccf9bd37..a6ce530a 160000
--- a/zscale
+++ b/zscale
@@ -1 +1 @@
-Subproject commit ccf9bd37268d6c0237a426e40175d05a3b890802
+Subproject commit a6ce530a3dc42eed1ada4b0d7fffe5f6a3cc5d08