I noticed OpenSCAD updated their internal copy (that we don't use).

The async deallocation might apply, not sure, I didn't notice heavy
memory use, but new OpenSCAD (next email) does seem a bit snappier on my
laptop.

https://github.com/elalish/manifold/releases

Comments, OK?

Index: Makefile
===================================================================
RCS file: /cvs/ports/cad/manifold/Makefile,v
diff -u -p -r1.3 Makefile
--- Makefile	11 Jul 2026 19:18:10 -0000	1.3
+++ Makefile	21 Sep 2026 00:48:16 -0000
@@ -1,7 +1,7 @@
 COMMENT =	geometry library for topological robustness
 GH_ACCOUNT =	elalish
 GH_PROJECT =	manifold
-GH_TAGNAME =	v3.5.1
+GH_TAGNAME =	v3.5.3
 
 CATEGORIES =	cad
 
Index: distinfo
===================================================================
RCS file: /cvs/ports/cad/manifold/distinfo,v
diff -u -p -r1.3 distinfo
--- distinfo	11 Jul 2026 19:18:10 -0000	1.3
+++ distinfo	21 Sep 2026 00:48:16 -0000
@@ -1,2 +1,2 @@
-SHA256 (manifold-3.5.1.tar.gz) = G0LyjXwcbQffckTKIst9gt6YCJkAGWnJmFwmYqd+tDw=
-SIZE (manifold-3.5.1.tar.gz) = 30976085
+SHA256 (manifold-3.5.3.tar.gz) = 69vXJ28t80aQ+30X0jnyZURlcBUtcS9clRt3Keqh9y8=
+SIZE (manifold-3.5.3.tar.gz) = 30977804