diff --git a/e2e/package-lock.json b/e2e/package-lock.json
index 1af2ab2de4..eb8292755f 100644
--- a/e2e/package-lock.json
+++ b/e2e/package-lock.json
@@ -63,7 +63,7 @@
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@@ -6657,6 +6657,16 @@
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+      "license": "MIT",
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@@ -9567,6 +9551,17 @@
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+      "resolved": "https://registry.npmjs.org/esrap/-/esrap-1.2.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
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@@ -15714,12 +15709,6 @@
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@@ -19295,29 +19273,28 @@
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+      "resolved": "https://registry.npmjs.org/svelte/-/svelte-5.1.13.tgz",
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-        "css-tree": "^2.3.1",
-        "estree-walker": "^3.0.3",
-        "is-reference": "^3.0.1",
+        "@ampproject/remapping": "^2.3.0",
+        "@jridgewell/sourcemap-codec": "^1.5.0",
+        "@types/estree": "^1.0.5",
+        "acorn": "^8.12.1",
+        "acorn-typescript": "^1.4.13",
+        "aria-query": "^5.3.1",
+        "axobject-query": "^4.1.0",
+        "esm-env": "^1.0.0",
+        "esrap": "^1.2.2",
+        "is-reference": "^3.0.2",
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-        "magic-string": "^0.30.4",
-        "periscopic": "^3.1.0"
+        "magic-string": "^0.30.11",
+        "zimmerframe": "^1.1.2"
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-        "node": ">=16"
+        "node": ">=18"
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     "node_modules/svelte-check": {
@@ -19430,6 +19407,16 @@
         "svelte": ">= 3"
       }
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+    "node_modules/svelte/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==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
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       "version": "3.2.4",
       "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.4.tgz",
@@ -21740,6 +21727,13 @@
       "funding": {
         "url": "https://github.com/sponsors/sindresorhus"
       }
+    },
+    "node_modules/zimmerframe": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/zimmerframe/-/zimmerframe-1.1.2.tgz",
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+      "dev": true,
+      "license": "MIT"
     }
   }
 }
diff --git a/e2e/package.json b/e2e/package.json
index 2ce42b5270..e358b7fa21 100644
--- a/e2e/package.json
+++ b/e2e/package.json
@@ -58,7 +58,7 @@
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     "rxjs": "7.8.1",
     "semver": "7.6.3",
-    "svelte": "4.2.19",
+    "svelte": "5.1.13",
     "svelte-check": "4.0.5",
     "svelte-jester": "5.0.0",
     "tap": "21.0.0",
diff --git a/package-lock.json b/package-lock.json
index b64b2267c5..db39dc2a98 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7915,6 +7915,16 @@
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       }
     },
+    "node_modules/acorn-typescript": {
+      "version": "1.4.13",
+      "resolved": "https://registry.npmjs.org/acorn-typescript/-/acorn-typescript-1.4.13.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "peerDependencies": {
+        "acorn": ">=8.9.0"
+      }
+    },
     "node_modules/acorn-walk": {
       "version": "8.3.4",
       "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.3.4.tgz",
@@ -9746,20 +9756,6 @@
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-      "resolved": "https://registry.npmjs.org/code-red/-/code-red-1.0.4.tgz",
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-      "license": "MIT",
-      "dependencies": {
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-        "@types/estree": "^1.0.1",
-        "acorn": "^8.10.0",
-        "estree-walker": "^3.0.3",
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@@ -10418,20 +10414,6 @@
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-      "license": "MIT",
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-        "source-map-js": "^1.0.1"
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       "resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
@@ -11589,6 +11571,13 @@
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+    "node_modules/esm-env": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/esm-env/-/esm-env-1.1.4.tgz",
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+      "dev": true,
+      "license": "MIT"
+    },
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       "resolved": "https://registry.npmjs.org/espree/-/espree-10.2.0.tgz",
@@ -11633,6 +11622,17 @@
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+    "node_modules/esrap": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/esrap/-/esrap-1.2.2.tgz",
+      "integrity": "sha512-F2pSJklxx1BlQIQgooczXCPHmcWpn6EsP5oo73LQfonG9fIlIENQ8vMmfGXeojP9MrkzUNAfyU5vdFlR9shHAw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@jridgewell/sourcemap-codec": "^1.4.15",
+        "@types/estree": "^1.0.1"
+      }
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     "node_modules/esrecurse": {
       "version": "4.3.0",
       "resolved": "https://registry.npmjs.org/esrecurse/-/esrecurse-4.3.0.tgz",
@@ -19718,13 +19718,6 @@
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@@ -22215,18 +22208,6 @@
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@@ -24581,40 +24562,38 @@
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-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
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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",
+      "version": "5.1.13",
+      "resolved": "https://registry.npmjs.org/svelte/-/svelte-5.1.13.tgz",
+      "integrity": "sha512-xVNk8yLsZNfkyqWzVg8+nfU9ewiSjVW0S4qyTxfKa6Y7P5ZBhA+LDsh2cHWIXJQMltikQAk6W3sqGdQZSH58PA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@ampproject/remapping": "^2.3.0",
+        "@jridgewell/sourcemap-codec": "^1.5.0",
+        "@types/estree": "^1.0.5",
+        "acorn": "^8.12.1",
+        "acorn-typescript": "^1.4.13",
+        "aria-query": "^5.3.1",
+        "axobject-query": "^4.1.0",
+        "esm-env": "^1.0.0",
+        "esrap": "^1.2.2",
+        "is-reference": "^3.0.2",
         "locate-character": "^3.0.0",
-        "magic-string": "^0.30.4",
-        "periscopic": "^3.1.0"
+        "magic-string": "^0.30.11",
+        "zimmerframe": "^1.1.2"
       },
       "engines": {
-        "node": ">=16"
+        "node": ">=18"
       }
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-    "node_modules/svelte/node_modules/@jridgewell/trace-mapping": {
-      "version": "0.3.25",
-      "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.25.tgz",
-      "integrity": "sha512-vNk6aEwybGtawWmy/PzwnGDOjCkLWSD2wqvjGGAgOAwCGWySYXfYoxt00IJkTF+8Lb57DwOb3Aa0o9CApepiYQ==",
+    "node_modules/svelte/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==",
       "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "@jridgewell/resolve-uri": "^3.1.0",
-        "@jridgewell/sourcemap-codec": "^1.4.14"
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">= 0.4"
       }
     },
     "node_modules/symbol-tree": {
@@ -26792,6 +26771,13 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/zimmerframe": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/zimmerframe/-/zimmerframe-1.1.2.tgz",
+      "integrity": "sha512-rAbqEGa8ovJy4pyBxZM70hg4pE6gDgaQ0Sl9M3enG3I0d6H4XSAM3GeNGLKnsBpuijUow064sf7ww1nutC5/3w==",
+      "dev": true,
+      "license": "MIT"
+    },
     "packages/api": {
       "name": "@stryker-mutator/api",
       "version": "8.6.0",
@@ -26940,7 +26926,7 @@
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         "@types/babel__generator": "7.6.8",
         "@types/estree": "1.0.6",
-        "svelte": "4.2.19"
+        "svelte": "5.1.13"
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diff --git a/packages/instrumenter/package.json b/packages/instrumenter/package.json
index d17f339aa7..283f63e5df 100644
--- a/packages/instrumenter/package.json
+++ b/packages/instrumenter/package.json
@@ -59,6 +59,6 @@
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     "@types/babel__generator": "7.6.8",
     "@types/estree": "1.0.6",
-    "svelte": "4.2.19"
+    "svelte": "5.1.13"
   }
 }