diff --git a/scad/common b/scad/common
index 87a68d0..91d0175 160000
--- a/scad/common
+++ b/scad/common
@@ -1 +1 @@
-Subproject commit 87a68d07fa3a29f923187073193def5bf0805c94
+Subproject commit 91d01754c407a7857cb746fb400be43291a2a18c