diff --git a/package.json b/package.json
index c25a9e923..1f3da34ca 100644
--- a/package.json
+++ b/package.json
@@ -99,7 +99,7 @@
     "@dimforge/rapier3d-compat": "^0.11.2",
     "@jscad/modeling": "2.9.6",
     "@jscad/regl-renderer": "^2.6.1",
-    "@jscad/stl-serializer": "2.1.11",
+    "@jscad/stl-serializer": "2.1.20",
     "ace-builds": "^1.25.1",
     "classnames": "^2.3.1",
     "gl-matrix": "^3.3.0",
diff --git a/yarn.lock b/yarn.lock
index ed4a2ecec..56c508c3d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1322,6 +1322,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@jscad/modeling@npm:2.12.5":
+  version: 2.12.5
+  resolution: "@jscad/modeling@npm:2.12.5"
+  checksum: 10c0/17d9f5a37b3ba108f3fdcbe44f997e68c3ad0e355fba016537dc985b268800a02a13d40e24f813e150334e9b6660e15d1d9160e0378f8faa14148faef33f8fcb
+  languageName: node
+  linkType: hard
+
 "@jscad/modeling@npm:2.9.6":
   version: 2.9.6
   resolution: "@jscad/modeling@npm:2.9.6"
@@ -1342,13 +1349,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@jscad/stl-serializer@npm:2.1.11":
-  version: 2.1.11
-  resolution: "@jscad/stl-serializer@npm:2.1.11"
+"@jscad/stl-serializer@npm:2.1.20":
+  version: 2.1.20
+  resolution: "@jscad/stl-serializer@npm:2.1.20"
   dependencies:
     "@jscad/array-utils": "npm:2.1.4"
-    "@jscad/modeling": "npm:2.9.6"
-  checksum: 10c0/6835b58077a20e74a05a300c9d0cf1fe3b8879cccd64fe64b1626e12d1aa261866c11c173d1020a4125ef9d1a0aee0c803401010ee9e9dbb2c9137c65e2c95b8
+    "@jscad/modeling": "npm:2.12.5"
+  checksum: 10c0/7904115ed5e2486770f51b23131d79647827ee565ad5118d23768653688c2ed1a27adc8a22f8b0945b23dc4d56550d0a0f30d2f036dc0f55d916247a6ef024db
   languageName: node
   linkType: hard
 
@@ -7846,7 +7853,7 @@ __metadata:
     "@dimforge/rapier3d-compat": "npm:^0.11.2"
     "@jscad/modeling": "npm:2.9.6"
     "@jscad/regl-renderer": "npm:^2.6.1"
-    "@jscad/stl-serializer": "npm:2.1.11"
+    "@jscad/stl-serializer": "npm:2.1.20"
     "@stylistic/eslint-plugin": "npm:^4.2.0"
     "@types/estree": "npm:^1.0.0"
     "@types/jest": "npm:^29.0.0"