diff --git a/package-lock.json b/package-lock.json
index 2b5847ea338..aa6df93dcf0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -26267,7 +26267,7 @@
     },
     "node_modules/scratch-vm": {
       "version": "5.0.300",
-      "resolved": "git+ssh://git@github.com/smalruby/scratch-vm.git#2690df4ff4b75edaba57aa04b7e864ab6b0d4bac",
+      "resolved": "git+ssh://git@github.com/smalruby/scratch-vm.git#cda38a4853738c882b7391f79e5eb5cdfe2e22c9",
       "license": "AGPL-3.0-only",
       "dependencies": {
         "@vernier/godirect": "^1.5.0",
diff --git a/src/lib/libraries/extensions/koshien/koshien-small.png b/src/lib/libraries/extensions/koshien/koshien-small.png
index 7264fa1f506..a81af6b69d2 100644
Binary files a/src/lib/libraries/extensions/koshien/koshien-small.png and b/src/lib/libraries/extensions/koshien/koshien-small.png differ
diff --git a/src/lib/libraries/extensions/koshien/koshien.png b/src/lib/libraries/extensions/koshien/koshien.png
index 8695f7c2f53..ddc2966d432 100644
Binary files a/src/lib/libraries/extensions/koshien/koshien.png and b/src/lib/libraries/extensions/koshien/koshien.png differ
diff --git a/src/lib/libraries/extensions/mesh/mesh-illustration.png b/src/lib/libraries/extensions/mesh/mesh-illustration.png
index e14e1cf2266..700e42634f1 100644
Binary files a/src/lib/libraries/extensions/mesh/mesh-illustration.png and b/src/lib/libraries/extensions/mesh/mesh-illustration.png differ
diff --git a/src/lib/libraries/extensions/mesh/mesh-small.png b/src/lib/libraries/extensions/mesh/mesh-small.png
index 8ab5631c545..83ccfd1e4ad 100644
Binary files a/src/lib/libraries/extensions/mesh/mesh-small.png and b/src/lib/libraries/extensions/mesh/mesh-small.png differ
diff --git a/src/lib/libraries/extensions/mesh/mesh.png b/src/lib/libraries/extensions/mesh/mesh.png
index cd3b54dab97..374b0f48487 100644
Binary files a/src/lib/libraries/extensions/mesh/mesh.png and b/src/lib/libraries/extensions/mesh/mesh.png differ