diff --git a/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package-lock.json b/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package-lock.json
index 9ad742ca69..5e68db2818 100644
--- a/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package-lock.json
+++ b/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package-lock.json
@@ -1445,12 +1445,12 @@
       }
     },
     "rollup": {
-      "version": "0.41.6",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-0.41.6.tgz",
-      "integrity": "sha512-rq3eIm5O0oWo2LswknhTxP9FQj+EsyRk8KN6DaRG+OVtQ1Ce1wA71+7eY9mjtqLfNVphcmBdlutn0bcHwHREng==",
+      "version": "3.29.5",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-3.29.5.tgz",
+      "integrity": "sha512-GVsDdsbJzzy4S/v3dqWPJ7EfvZJfCHiDqe80IyrF59LYuP+e6U1LJoUqeuqRbwAWoMNoXivMNeNAOf5E22VA1w==",
       "dev": true,
       "requires": {
-        "source-map-support": "^0.4.0"
+        "fsevents": "~2.3.2"
       }
     },
     "rollup-plugin-node-resolve": {
@@ -1564,15 +1564,6 @@
       "integrity": "sha512-LbrmJOMUSdEVxIKvdcJzQC+nQhe8FUZQTXQy6+I75skNgn3OoQ0DZA8YnFa7gp8tqtL3KPf1kmo0R5DoApeSGQ==",
       "dev": true
     },
-    "source-map-support": {
-      "version": "0.4.18",
-      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.4.18.tgz",
-      "integrity": "sha512-try0/JqxPLF9nOjvSta7tVondkP5dwgyLDjVoyMDlmjugT2lRZ1OfsrYTkCd2hkDnJTKRbO/Rl3orm8vlsUzbA==",
-      "dev": true,
-      "requires": {
-        "source-map": "^0.5.6"
-      }
-    },
     "string.prototype.trim": {
       "version": "1.2.9",
       "resolved": "https://registry.npmjs.org/string.prototype.trim/-/string.prototype.trim-1.2.9.tgz",
diff --git a/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package.json b/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package.json
index 3da18e754f..fa54dbc063 100644
--- a/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package.json
+++ b/py/htm/advanced/examples/single_layer_2d_experiment/visualizations/package.json
@@ -13,7 +13,7 @@
     "dev": "http-server && onchange 'js/**/*.js' -- npm run build"
   },
   "devDependencies": {
-    "rollup": "0.41.6",
+    "rollup": "3.29.5",
     "rollup-plugin-node-resolve": "^2.0.0",
     "tape": "4",
     "uglify-js": "2",