diff --git a/apps/sif-demo-app/package.json b/apps/sif-demo-app/package.json
index f4eafd4ae..c687dd9b8 100644
--- a/apps/sif-demo-app/package.json
+++ b/apps/sif-demo-app/package.json
@@ -62,7 +62,7 @@
         "stylelint": "16.12.0",
         "tailwindcss": "3.4.16",
         "typescript": "5.7.2",
-        "typescript-eslint": "8.18.0",
+        "typescript-eslint": "8.19.0",
         "vite": "6.0.3",
         "vite-plugin-checker": "0.8.0"
     }
diff --git a/apps/ungdomsytelse-deltaker/package.json b/apps/ungdomsytelse-deltaker/package.json
index 97c82cbfc..bf58e8a41 100644
--- a/apps/ungdomsytelse-deltaker/package.json
+++ b/apps/ungdomsytelse-deltaker/package.json
@@ -78,7 +78,7 @@
         "stylelint": "16.12.0",
         "tailwindcss": "3.4.16",
         "typescript": "5.7.2",
-        "typescript-eslint": "8.18.0",
+        "typescript-eslint": "8.19.0",
         "vite": "6.0.3",
         "vite-plugin-checker": "0.8.0",
         "vitest": "2.1.8"
diff --git a/apps/ungdomsytelse-veileder/package.json b/apps/ungdomsytelse-veileder/package.json
index d8e34d01a..acb3cf726 100644
--- a/apps/ungdomsytelse-veileder/package.json
+++ b/apps/ungdomsytelse-veileder/package.json
@@ -65,7 +65,7 @@
         "stylelint": "16.12.0",
         "tailwindcss": "3.4.16",
         "typescript": "5.7.2",
-        "typescript-eslint": "8.18.0",
+        "typescript-eslint": "8.19.0",
         "vite": "6.0.3",
         "vite-plugin-checker": "0.8.0"
     }
diff --git a/packages/eslint-config-sif/package.json b/packages/eslint-config-sif/package.json
index ed3e3df99..eac744389 100644
--- a/packages/eslint-config-sif/package.json
+++ b/packages/eslint-config-sif/package.json
@@ -13,7 +13,7 @@
         "eslint-plugin-vitest": "0.5.4",
         "globals": "15.13.0",
         "typescript": "5.7.2",
-        "typescript-eslint": "8.18.0"
+        "typescript-eslint": "8.19.0"
     },
     "packageManager": "yarn@4.3.1"
 }
diff --git a/yarn.lock b/yarn.lock
index e7563883b..83d804d84 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5186,7 +5186,7 @@ __metadata:
     stylelint: "npm:16.12.0"
     tailwindcss: "npm:3.4.16"
     typescript: "npm:5.7.2"
-    typescript-eslint: "npm:8.18.0"
+    typescript-eslint: "npm:8.19.0"
     vite: "npm:6.0.3"
     vite-plugin-checker: "npm:0.8.0"
     zod: "npm:3.24.1"
@@ -5351,7 +5351,7 @@ __metadata:
     stylelint: "npm:16.12.0"
     tailwindcss: "npm:3.4.16"
     typescript: "npm:5.7.2"
-    typescript-eslint: "npm:8.18.0"
+    typescript-eslint: "npm:8.19.0"
     uuid: "npm:11.0.3"
     vite: "npm:6.0.3"
     vite-plugin-checker: "npm:0.8.0"
@@ -5408,7 +5408,7 @@ __metadata:
     stylelint: "npm:16.12.0"
     tailwindcss: "npm:3.4.16"
     typescript: "npm:5.7.2"
-    typescript-eslint: "npm:8.18.0"
+    typescript-eslint: "npm:8.19.0"
     vite: "npm:6.0.3"
     vite-plugin-checker: "npm:0.8.0"
     zod: "npm:3.24.1"
@@ -7812,7 +7812,7 @@ __metadata:
     eslint-plugin-vitest: "npm:0.5.4"
     globals: "npm:15.13.0"
     typescript: "npm:5.7.2"
-    typescript-eslint: "npm:8.18.0"
+    typescript-eslint: "npm:8.19.0"
   languageName: unknown
   linkType: soft
 
@@ -9792,6 +9792,27 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/eslint-plugin@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/eslint-plugin@npm:8.19.0"
+  dependencies:
+    "@eslint-community/regexpp": "npm:^4.10.0"
+    "@typescript-eslint/scope-manager": "npm:8.19.0"
+    "@typescript-eslint/type-utils": "npm:8.19.0"
+    "@typescript-eslint/utils": "npm:8.19.0"
+    "@typescript-eslint/visitor-keys": "npm:8.19.0"
+    graphemer: "npm:^1.4.0"
+    ignore: "npm:^5.3.1"
+    natural-compare: "npm:^1.4.0"
+    ts-api-utils: "npm:^1.3.0"
+  peerDependencies:
+    "@typescript-eslint/parser": ^8.0.0 || ^8.0.0-alpha.0
+    eslint: ^8.57.0 || ^9.0.0
+    typescript: ">=4.8.4 <5.8.0"
+  checksum: 10/9b12f1e0708d5f5a0a6819119d6c98bc21c5d9b2b589ecaad6b7fdb50bcf6444b52ea3ed227ffe90d90422a957d3aa30b8ab95f10d0d4d2829996fa1152d0762
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/parser@npm:8.18.0, @typescript-eslint/parser@npm:^5.4.2 || ^6.0.0 || ^7.0.0 || ^8.0.0":
   version: 8.18.0
   resolution: "@typescript-eslint/parser@npm:8.18.0"
@@ -9808,6 +9829,22 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/parser@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/parser@npm:8.19.0"
+  dependencies:
+    "@typescript-eslint/scope-manager": "npm:8.19.0"
+    "@typescript-eslint/types": "npm:8.19.0"
+    "@typescript-eslint/typescript-estree": "npm:8.19.0"
+    "@typescript-eslint/visitor-keys": "npm:8.19.0"
+    debug: "npm:^4.3.4"
+  peerDependencies:
+    eslint: ^8.57.0 || ^9.0.0
+    typescript: ">=4.8.4 <5.8.0"
+  checksum: 10/7e1bd88be87dd59645a314d50fda4cc2c038c9426a80a27a6d85c31b8b2d219451395280f0a59565275342af80b0a611ca650c704302f39ebc392e22a98a2950
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/scope-manager@npm:7.18.0":
   version: 7.18.0
   resolution: "@typescript-eslint/scope-manager@npm:7.18.0"
@@ -9828,6 +9865,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/scope-manager@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/scope-manager@npm:8.19.0"
+  dependencies:
+    "@typescript-eslint/types": "npm:8.19.0"
+    "@typescript-eslint/visitor-keys": "npm:8.19.0"
+  checksum: 10/ab7f72533c62b6e7c87e4c91c187098e1026a8d67044c2a8376affede949c7c2f3d1b4bec0047d4001cd16c3a30db0b01672f596ef284d12b143cd4a984cdfdc
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/type-utils@npm:8.18.0":
   version: 8.18.0
   resolution: "@typescript-eslint/type-utils@npm:8.18.0"
@@ -9843,6 +9890,21 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/type-utils@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/type-utils@npm:8.19.0"
+  dependencies:
+    "@typescript-eslint/typescript-estree": "npm:8.19.0"
+    "@typescript-eslint/utils": "npm:8.19.0"
+    debug: "npm:^4.3.4"
+    ts-api-utils: "npm:^1.3.0"
+  peerDependencies:
+    eslint: ^8.57.0 || ^9.0.0
+    typescript: ">=4.8.4 <5.8.0"
+  checksum: 10/c8fc5ca2a3f0b701389a2c45ee1ebc5ca211769164b822d54af873a7f1735a160845fcdd14a988a547dda12e1a3249ecef5bc381a1d067b1ab9e6bbf6398f509
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/types@npm:7.18.0":
   version: 7.18.0
   resolution: "@typescript-eslint/types@npm:7.18.0"
@@ -9857,6 +9919,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/types@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/types@npm:8.19.0"
+  checksum: 10/1bf02b6fcae72ccd60bbd9858e8e13ff49332bb819e9479d48b081026b62512baa8f72f2123bb3abdf816cc667aae25b311db941bee737afad6118189f761a17
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/typescript-estree@npm:7.18.0":
   version: 7.18.0
   resolution: "@typescript-eslint/typescript-estree@npm:7.18.0"
@@ -9894,6 +9963,24 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/typescript-estree@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/typescript-estree@npm:8.19.0"
+  dependencies:
+    "@typescript-eslint/types": "npm:8.19.0"
+    "@typescript-eslint/visitor-keys": "npm:8.19.0"
+    debug: "npm:^4.3.4"
+    fast-glob: "npm:^3.3.2"
+    is-glob: "npm:^4.0.3"
+    minimatch: "npm:^9.0.4"
+    semver: "npm:^7.6.0"
+    ts-api-utils: "npm:^1.3.0"
+  peerDependencies:
+    typescript: ">=4.8.4 <5.8.0"
+  checksum: 10/6d396f82079f67d32a5ef644767697e8bbd79d166cc5ea034dcc2b146a62744de91d87885495ecfe3d9a0de98413e4dbb618b76bd657377df174cd2d12bab863
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/utils@npm:8.18.0, @typescript-eslint/utils@npm:^8.8.1":
   version: 8.18.0
   resolution: "@typescript-eslint/utils@npm:8.18.0"
@@ -9909,6 +9996,21 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/utils@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/utils@npm:8.19.0"
+  dependencies:
+    "@eslint-community/eslint-utils": "npm:^4.4.0"
+    "@typescript-eslint/scope-manager": "npm:8.19.0"
+    "@typescript-eslint/types": "npm:8.19.0"
+    "@typescript-eslint/typescript-estree": "npm:8.19.0"
+  peerDependencies:
+    eslint: ^8.57.0 || ^9.0.0
+    typescript: ">=4.8.4 <5.8.0"
+  checksum: 10/e57f5e5d6fc00be3596f58be77904b66079f67a61effa633372ebcc92a0b6090f71183b3be145c55b5a5ab8f0536f98f0034c4d9a8031c1422e4e2753b97fd21
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/utils@npm:^7.7.1":
   version: 7.18.0
   resolution: "@typescript-eslint/utils@npm:7.18.0"
@@ -9943,6 +10045,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/visitor-keys@npm:8.19.0":
+  version: 8.19.0
+  resolution: "@typescript-eslint/visitor-keys@npm:8.19.0"
+  dependencies:
+    "@typescript-eslint/types": "npm:8.19.0"
+    eslint-visitor-keys: "npm:^4.2.0"
+  checksum: 10/065b95253be57cf5e8f15ebb09dbcb70e97cd37d238a6cf3d4be3c7bc42e94d77a062e8f97a2333a2e03eb58c736c00ec0ab3b7a1bddfef30387eb167776116e
+  languageName: node
+  linkType: hard
+
 "@uiw/codemirror-extensions-basic-setup@npm:4.23.7":
   version: 4.23.7
   resolution: "@uiw/codemirror-extensions-basic-setup@npm:4.23.7"
@@ -26009,7 +26121,21 @@ __metadata:
   languageName: node
   linkType: hard
 
-"typescript-eslint@npm:8.18.0, typescript-eslint@npm:^8.17.0":
+"typescript-eslint@npm:8.19.0":
+  version: 8.19.0
+  resolution: "typescript-eslint@npm:8.19.0"
+  dependencies:
+    "@typescript-eslint/eslint-plugin": "npm:8.19.0"
+    "@typescript-eslint/parser": "npm:8.19.0"
+    "@typescript-eslint/utils": "npm:8.19.0"
+  peerDependencies:
+    eslint: ^8.57.0 || ^9.0.0
+    typescript: ">=4.8.4 <5.8.0"
+  checksum: 10/c8a57563910c4eff7d09a009c0c87419e12c195b57d1ff9fe775afb54c9b24b4133f71c59c2f2dee3ca63494721ba8d7bcf5951ac693199cae0d6b83e67a5c68
+  languageName: node
+  linkType: hard
+
+"typescript-eslint@npm:^8.17.0":
   version: 8.18.0
   resolution: "typescript-eslint@npm:8.18.0"
   dependencies: