diff --git a/package-lock.json b/package-lock.json
index f7b18fa..892dcf3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -43,7 +43,7 @@
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         "rehype-slug": "^5.1.0",
         "striptags": "^3.2.0",
-        "svelte": "^3.55.0",
+        "svelte": "^4.2.19",
         "svelte-check": "^3.0.1",
         "svelte-confetti": "^1.2.2",
         "svelte-french-toast": "^1.0.3",
@@ -87,6 +87,18 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
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+    "node_modules/@ampproject/remapping": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/@ampproject/remapping/-/remapping-2.3.0.tgz",
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+      "dependencies": {
+        "@jridgewell/gen-mapping": "^0.3.5",
+        "@jridgewell/trace-mapping": "^0.3.24"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
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       "version": "7.22.5",
       "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.22.5.tgz",
@@ -592,14 +604,13 @@
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-      "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.3.tgz",
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-      "dev": true,
+      "version": "0.3.5",
+      "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.5.tgz",
+      "integrity": "sha512-IzL8ZoEDIBRWEzlCcRhOaCupYyN5gdIK+Q6fbFdPDg6HqX6jpkItn7DFIpW9LQzXG6Df9sA7+OKnq0qlz/GaQg==",
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-        "@jridgewell/set-array": "^1.0.1",
+        "@jridgewell/set-array": "^1.2.1",
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-        "@jridgewell/trace-mapping": "^0.3.9"
+        "@jridgewell/trace-mapping": "^0.3.24"
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@@ -609,30 +620,27 @@
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-      "dev": true,
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         "node": ">=6.0.0"
       }
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     "node_modules/@jridgewell/set-array": {
-      "version": "1.1.2",
-      "resolved": "https://registry.npmjs.org/@jridgewell/set-array/-/set-array-1.1.2.tgz",
-      "integrity": "sha512-xnkseuNADM0gt2bs+BvhO0p78Mk762YnZdsuzFV018NoG1Sj1SCQvpSqa7XUaTam5vAGasABV9qXASMKnFMwMw==",
-      "dev": true,
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@jridgewell/set-array/-/set-array-1.2.1.tgz",
+      "integrity": "sha512-R8gLRTZeyp03ymzP/6Lil/28tGeGEzhx1q2k703KGWRAI1VdvPIXdG70VJc2pAMw3NA6JKL5hhFu1sJX0Mnn/A==",
       "engines": {
         "node": ">=6.0.0"
       }
     },
     "node_modules/@jridgewell/sourcemap-codec": {
-      "version": "1.4.15",
-      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.4.15.tgz",
-      "integrity": "sha512-eF2rxCRulEKXHTRiDrDy6erMYWqNw4LPdQ8UQA4huuxaQsVeRPFl2oM8oDGxMFhJUWZf9McpLtJasDDZb/Bpeg=="
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.0.tgz",
+      "integrity": "sha512-gv3ZRaISU3fjPAgNsriBRqGWQL6quFx04YMPW/zD8XMLsU32mhCCbfbO6KZFLjvYpCZ8zyDEgqsgf+PwPaM7GQ=="
     },
     "node_modules/@jridgewell/trace-mapping": {
-      "version": "0.3.19",
-      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.19.tgz",
-      "integrity": "sha512-kf37QtfW+Hwx/buWGMPcR60iF9ziHa6r/CZJIHbmcm4+0qrXiVdxegAH0F6yddEVQ7zdkjcGCgCzUu+BcbhQxw==",
-      "dev": true,
+      "version": "0.3.25",
+      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.25.tgz",
+      "integrity": "sha512-vNk6aEwybGtawWmy/PzwnGDOjCkLWSD2wqvjGGAgOAwCGWySYXfYoxt00IJkTF+8Lb57DwOb3Aa0o9CApepiYQ==",
       "dependencies": {
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@@ -1234,8 +1242,7 @@
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       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.1.tgz",
-      "integrity": "sha512-LG4opVs2ANWZ1TJoKc937iMmNstM/d0ae1vNbnBvBhqCSezgVUOzcLCqbI5elV8Vy6WKwKjaqR+zO9VKirBBCA==",
-      "dev": true
+      "integrity": "sha512-LG4opVs2ANWZ1TJoKc937iMmNstM/d0ae1vNbnBvBhqCSezgVUOzcLCqbI5elV8Vy6WKwKjaqR+zO9VKirBBCA=="
     },
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@@ -1572,6 +1579,14 @@
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       "dev": true
     },
+    "node_modules/aria-query": {
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/aria-query/-/aria-query-5.3.2.tgz",
+      "integrity": "sha512-COROpnaoap1E2F000S62r6A60uHZnmlvomhfyT2DlTcrY1OrBKn2UhH7qn5wTC9zMvD0AY7csdPSNwKP+7WiQw==",
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
     "node_modules/array-union": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/array-union/-/array-union-2.1.0.tgz",
@@ -1668,6 +1683,14 @@
         "proxy-from-env": "^1.1.0"
       }
     },
+    "node_modules/axobject-query": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-4.1.0.tgz",
+      "integrity": "sha512-qIj0G9wZbMGNLjLmg1PT6v2mE9AH2zlnADJD/2tC6E00hgmhUOfEB6greHPAfLRSufHqROIUTkw6E+M3lH0PTQ==",
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
     "node_modules/bail": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/bail/-/bail-2.0.2.tgz",
@@ -1980,6 +2003,26 @@
         "node": ">=6"
       }
     },
+    "node_modules/code-red": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/code-red/-/code-red-1.0.4.tgz",
+      "integrity": "sha512-7qJWqItLA8/VPVlKJlFXU+NBlo/qyfs39aJcuMT/2ere32ZqvF5OSxgdM5xOfJJ7O429gg2HM47y8v9P+9wrNw==",
+      "dependencies": {
+        "@jridgewell/sourcemap-codec": "^1.4.15",
+        "@types/estree": "^1.0.1",
+        "acorn": "^8.10.0",
+        "estree-walker": "^3.0.3",
+        "periscopic": "^3.1.0"
+      }
+    },
+    "node_modules/code-red/node_modules/estree-walker": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
+      "integrity": "sha512-7RUKfXgSMMkzt6ZuXmqapOurLGPPfgj6l9uRZ7lRGolvk0y2yocc35LdcxKC5PQZdn2DMqioAQ2NoWcrTKmm6g==",
+      "dependencies": {
+        "@types/estree": "^1.0.0"
+      }
+    },
     "node_modules/color": {
       "version": "4.2.3",
       "resolved": "https://registry.npmjs.org/color/-/color-4.2.3.tgz",
@@ -3733,6 +3776,11 @@
         "lie": "3.1.1"
       }
     },
+    "node_modules/locate-character": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/locate-character/-/locate-character-3.0.0.tgz",
+      "integrity": "sha512-SW13ws7BjaeJ6p7Q6CO2nchbYEc3X3J6WrmTTDto7yMPqVSZTUyY5Tjbid+Ab8gLnATtygYtiDIJGQRRn2ZOiA=="
+    },
     "node_modules/locate-path": {
       "version": "6.0.0",
       "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-6.0.0.tgz",
@@ -3795,14 +3843,11 @@
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     "node_modules/magic-string": {
-      "version": "0.30.2",
-      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.2.tgz",
-      "integrity": "sha512-lNZdu7pewtq/ZvWUp9Wpf/x7WzMTsR26TWV03BRZrXFsv+BI6dy8RAiKgm1uM/kyR0rCfUcqvOlXKG66KhIGug==",
+      "version": "0.30.12",
+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.12.tgz",
+      "integrity": "sha512-Ea8I3sQMVXr8JhN4z+H/d8zwo+tYDgHE9+5G4Wnrwhs0gaK9fXTKx0Tw5Xwsd/bCPTTZNRAdpyzvoeORe9LYpw==",
       "dependencies": {
-        "@jridgewell/sourcemap-codec": "^1.4.15"
-      },
-      "engines": {
-        "node": ">=12"
+        "@jridgewell/sourcemap-codec": "^1.5.0"
       }
     },
     "node_modules/magicast": {
@@ -4295,6 +4340,32 @@
         "node": ">=8"
       }
     },
+    "node_modules/periscopic": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/periscopic/-/periscopic-3.1.0.tgz",
+      "integrity": "sha512-vKiQ8RRtkl9P+r/+oefh25C3fhybptkHKCZSPlcXiJux2tJF55GnEj3BVn4A5gKfq9NWWXXrxkHBwVPUfH0opw==",
+      "dependencies": {
+        "@types/estree": "^1.0.0",
+        "estree-walker": "^3.0.0",
+        "is-reference": "^3.0.0"
+      }
+    },
+    "node_modules/periscopic/node_modules/estree-walker": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
+      "integrity": "sha512-7RUKfXgSMMkzt6ZuXmqapOurLGPPfgj6l9uRZ7lRGolvk0y2yocc35LdcxKC5PQZdn2DMqioAQ2NoWcrTKmm6g==",
+      "dependencies": {
+        "@types/estree": "^1.0.0"
+      }
+    },
+    "node_modules/periscopic/node_modules/is-reference": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-3.0.2.tgz",
+      "integrity": "sha512-v3rht/LgVcsdZa3O2Nqs+NMowLOxeOm7Ay9+/ARQ2F+qEoANRcqrjAZKGN0v8ymUetZGgkp26LTnGT7H0Qo9Pg==",
+      "dependencies": {
+        "@types/estree": "*"
+      }
+    },
     "node_modules/picocolors": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz",
@@ -5874,11 +5945,27 @@
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     "node_modules/svelte": {
-      "version": "3.59.2",
-      "resolved": "https://registry.npmjs.org/svelte/-/svelte-3.59.2.tgz",
-      "integrity": "sha512-vzSyuGr3eEoAtT/A6bmajosJZIUWySzY2CzB3w2pgPvnkUjGqlDnsNnA0PMO+mMAhuyMul6C2uuZzY6ELSkzyA==",
+      "version": "4.2.19",
+      "resolved": "https://registry.npmjs.org/svelte/-/svelte-4.2.19.tgz",
+      "integrity": "sha512-IY1rnGr6izd10B0A8LqsBfmlT5OILVuZ7XsI0vdGPEvuonFV7NYEUK4dAkm9Zg2q0Um92kYjTpS1CAP3Nh/KWw==",
+      "dependencies": {
+        "@ampproject/remapping": "^2.2.1",
+        "@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",
+        "periscopic": "^3.1.0"
+      },
       "engines": {
-        "node": ">= 8"
+        "node": ">=16"
       }
     },
     "node_modules/svelte-check": {
@@ -6078,6 +6165,39 @@
         "svelte": "^3.2.1 || ^4.0.0-next.1"
       }
     },
+    "node_modules/svelte/node_modules/css-tree": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.3.1.tgz",
+      "integrity": "sha512-6Fv1DV/TYw//QF5IzQdqsNDjx/wc8TrMBZsqjL9eW01tWb7R7k/mq+/VXfJCl7SoD5emsJop9cOByJZfs8hYIw==",
+      "dependencies": {
+        "mdn-data": "2.0.30",
+        "source-map-js": "^1.0.1"
+      },
+      "engines": {
+        "node": "^10 || ^12.20.0 || ^14.13.0 || >=15.0.0"
+      }
+    },
+    "node_modules/svelte/node_modules/estree-walker": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
+      "integrity": "sha512-7RUKfXgSMMkzt6ZuXmqapOurLGPPfgj6l9uRZ7lRGolvk0y2yocc35LdcxKC5PQZdn2DMqioAQ2NoWcrTKmm6g==",
+      "dependencies": {
+        "@types/estree": "^1.0.0"
+      }
+    },
+    "node_modules/svelte/node_modules/is-reference": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/is-reference/-/is-reference-3.0.2.tgz",
+      "integrity": "sha512-v3rht/LgVcsdZa3O2Nqs+NMowLOxeOm7Ay9+/ARQ2F+qEoANRcqrjAZKGN0v8ymUetZGgkp26LTnGT7H0Qo9Pg==",
+      "dependencies": {
+        "@types/estree": "*"
+      }
+    },
+    "node_modules/svelte/node_modules/mdn-data": {
+      "version": "2.0.30",
+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.30.tgz",
+      "integrity": "sha512-GaqWWShW4kv/G9IEucWScBx9G1/vsFZZJUO+tD26M8J8z3Kw5RDQjaoZe03YAClgeS/SWPOcb4nkFBTEi5DUEA=="
+    },
     "node_modules/sveltekit-flash-message": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/sveltekit-flash-message/-/sveltekit-flash-message-1.0.1.tgz",
diff --git a/package.json b/package.json
index 106fd61..4ee6269 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "rehype-external-links": "^2.1.0",
     "rehype-slug": "^5.1.0",
     "striptags": "^3.2.0",
-    "svelte": "^3.55.0",
+    "svelte": "^4.2.19",
     "svelte-check": "^3.0.1",
     "svelte-confetti": "^1.2.2",
     "svelte-french-toast": "^1.0.3",