diff --git a/scad/common b/scad/common
index b499c28..53f4dd4 160000
--- a/scad/common
+++ b/scad/common
@@ -1 +1 @@
-Subproject commit b499c2810117b5ca57014d5cb4219cf68b4c5c0f
+Subproject commit 53f4dd4a2d6dd038c1beb97f8ae721ec5905a43b
diff --git a/scad/sprocketed_roller b/scad/sprocketed_roller
index 4482a47..e8f2e63 160000
--- a/scad/sprocketed_roller
+++ b/scad/sprocketed_roller
@@ -1 +1 @@
-Subproject commit 4482a471bb357e93e9cabe9efaecba0370a3a0bd
+Subproject commit e8f2e63b2efe35621479d3b9f4dc6a710a57dfe6