diff --git a/popcap-pak-wasm/demo/package-lock.json b/popcap-pak-wasm/demo/package-lock.json
index 95a8752..8d32894 100644
--- a/popcap-pak-wasm/demo/package-lock.json
+++ b/popcap-pak-wasm/demo/package-lock.json
@@ -7,7 +7,7 @@
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@@ -15,6 +15,19 @@
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+      "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.3.0.tgz",
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+      "dev": true,
+      "dependencies": {
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+        "@jridgewell/trace-mapping": "^0.3.24"
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@@ -67,9 +80,9 @@
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+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.0.tgz",
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+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.12.1.tgz",
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@@ -593,12 +606,30 @@
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+      "engines": {
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+      "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-4.1.0.tgz",
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@@ -874,6 +905,19 @@
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+      "resolved": "https://registry.npmjs.org/code-red/-/code-red-1.0.4.tgz",
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+      "dev": true,
+      "dependencies": {
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+        "@types/estree": "^1.0.1",
+        "acorn": "^8.10.0",
+        "estree-walker": "^3.0.3",
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@@ -1033,6 +1077,19 @@
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+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.3.1.tgz",
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@@ -1367,6 +1424,15 @@
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@@ -2126,6 +2192,15 @@
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+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-3.0.2.tgz",
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@@ -2275,6 +2350,12 @@
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@@ -2302,6 +2383,21 @@
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+      "dependencies": {
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+    "node_modules/mdn-data": {
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+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.30.tgz",
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+      "resolved": "https://registry.npmjs.org/periscopic/-/periscopic-3.1.0.tgz",
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+        "estree-walker": "^3.0.0",
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@@ -3277,6 +3384,15 @@
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+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
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+        "@types/estree": "^1.0.1",
+        "acorn": "^8.9.0",
+        "aria-query": "^5.3.0",
+        "axobject-query": "^4.0.0",
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+        "css-tree": "^2.3.1",
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@@ -4081,6 +4213,16 @@
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+      "requires": {
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+        "@jridgewell/trace-mapping": "^0.3.24"
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@@ -4592,12 +4734,24 @@
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+      "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-4.1.0.tgz",
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@@ -4793,6 +4947,19 @@
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+      "resolved": "https://registry.npmjs.org/code-red/-/code-red-1.0.4.tgz",
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+      "requires": {
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+        "@types/estree": "^1.0.1",
+        "acorn": "^8.10.0",
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@@ -4927,6 +5094,16 @@
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@@ -5733,6 +5919,15 @@
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@@ -5845,6 +6040,12 @@
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@@ -5869,6 +6070,21 @@
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+      "requires": {
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+    "mdn-data": {
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     },
+    "periscopic": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/periscopic/-/periscopic-3.1.0.tgz",
+      "integrity": "sha512-vKiQ8RRtkl9P+r/+oefh25C3fhybptkHKCZSPlcXiJux2tJF55GnEj3BVn4A5gKfq9NWWXXrxkHBwVPUfH0opw==",
+      "dev": true,
+      "requires": {
+        "@types/estree": "^1.0.0",
+        "estree-walker": "^3.0.0",
+        "is-reference": "^3.0.0"
+      }
+    },
     "picocolors": {
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       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.0.tgz",
@@ -6612,6 +6839,12 @@
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       "dev": true
     },
+    "source-map-js": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
+      "integrity": "sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==",
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+    },
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@@ -6729,10 +6962,26 @@
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-      "resolved": "https://registry.npmjs.org/svelte/-/svelte-3.57.0.tgz",
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+      "version": "4.2.19",
+      "resolved": "https://registry.npmjs.org/svelte/-/svelte-4.2.19.tgz",
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+      "dev": true,
+      "requires": {
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+        "@jridgewell/sourcemap-codec": "^1.4.15",
+        "@jridgewell/trace-mapping": "^0.3.18",
+        "@types/estree": "^1.0.1",
+        "acorn": "^8.9.0",
+        "aria-query": "^5.3.0",
+        "axobject-query": "^4.0.0",
+        "code-red": "^1.0.3",
+        "css-tree": "^2.3.1",
+        "estree-walker": "^3.0.3",
+        "is-reference": "^3.0.1",
+        "locate-character": "^3.0.0",
+        "magic-string": "^0.30.4",
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diff --git a/popcap-pak-wasm/demo/package.json b/popcap-pak-wasm/demo/package.json
index 7422d65..702ec17 100644
--- a/popcap-pak-wasm/demo/package.json
+++ b/popcap-pak-wasm/demo/package.json
@@ -10,7 +10,7 @@
     "webpack": "^5.94.0",
     "webpack-cli": "^4.7.2",
     "webpack-dev-server": "^4.11.1",
-    "svelte": "^3.31.2",
+    "svelte": "^4.2.19",
     "svelte-loader": "^3.0.0"
   }
 }