diff --git a/experiments/perceptual_chunks/package-lock.json b/experiments/perceptual_chunks/package-lock.json
index d569ebd3..a5dfe19f 100644
--- a/experiments/perceptual_chunks/package-lock.json
+++ b/experiments/perceptual_chunks/package-lock.json
@@ -4,6 +4,21 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@types/cookie": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.1.tgz",
+      "integrity": "sha512-XW/Aa8APYr6jSVVA1y/DEIZX0/GMKLEVekNG727R8cs56ahETkRAy/3DR7+fJyh7oUgGwNQaRfXCun0+KbWY7Q=="
+    },
+    "@types/cors": {
+      "version": "2.8.12",
+      "resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.12.tgz",
+      "integrity": "sha512-vt+kDhq/M2ayberEtJcIN/hxXy1Pk+59g2FV/ZQceeaTyCtCucjL2Q7FXlFjtWn4n15KCr1NE2lNNFhp0lEThw=="
+    },
+    "@types/node": {
+      "version": "18.11.9",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.11.9.tgz",
+      "integrity": "sha512-CRpX21/kGdzjOpFsZSkcrXMGIBWMGNIHXXBVFSH+ggkftxg+XYP20TESbh+zFvFj3EQOl5byk0HTRn1IL6hbqg=="
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@@ -1423,41 +1438,49 @@
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+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.2.1.tgz",
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       "requires": {
+        "@types/cookie": "^0.4.1",
+        "@types/cors": "^2.8.12",
+        "@types/node": ">=10.0.0",
         "accepts": "~1.3.4",
         "base64id": "2.0.0",
         "cookie": "~0.4.1",
         "cors": "~2.8.5",
-        "debug": "~4.1.0",
-        "engine.io-parser": "~4.0.0",
-        "ws": "^7.1.2"
+        "debug": "~4.3.1",
+        "engine.io-parser": "~5.0.3",
+        "ws": "~8.2.3"
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-          "version": "0.4.1",
-          "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.1.tgz",
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+          "version": "0.4.2",
+          "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
+          "integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA=="
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-          "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-          "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+          "version": "4.3.4",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
+          "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
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         "engine.io-parser": {
-          "version": "4.0.1",
-          "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-4.0.1.tgz",
-          "integrity": "sha512-v5aZK1hlckcJDGmHz3W8xvI3NUHYc9t8QtTbqdR5OaH3S9iJZilPubauOm+vLWOMMWzpE3hiq92l9lTAHamRCg=="
+          "version": "5.0.4",
+          "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.0.4.tgz",
+          "integrity": "sha512-+nVFp+5z1E3HcToEnO7ZIj3g+3k9389DvWtvJZz0T6/eOCPIyyxehFcedoYrZQrp0LgQbD9pPXhpMBKMd5QURg=="
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+        },
+        "ws": {
+          "version": "8.2.3",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-8.2.3.tgz",
+          "integrity": "sha512-wBuoj1BDpC6ZQ1B7DWQBYVLphPWkm8i9Y0/3YdHjHKHiohOJ1ws+3OccDWtH+PoC9DZD5WOTrJvNbWvjS6JWaA=="
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diff --git a/experiments/perceptual_chunks/package.json b/experiments/perceptual_chunks/package.json
index 5a3ac396..b70f57e4 100644
--- a/experiments/perceptual_chunks/package.json
+++ b/experiments/perceptual_chunks/package.json
@@ -12,7 +12,7 @@
     "colors": "^1.3.0",
     "csv-parse": "~0.0.6",
     "delta-e": "~0.0.7",
-    "engine.io": "^4.0.4",
+    "engine.io": "^6.2.1",
     "engine.io-client": "^4.0.4",
     "express": "^4.16.3",
     "fs": "0.0.1-security",