diff --git a/package.json b/package.json
index 4921413..8309271 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@typescript-eslint/eslint-plugin": "7.18.0",
-    "@typescript-eslint/parser": "7.18.0",
+    "@typescript-eslint/parser": "8.3.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-import": "^2.29.1",
     "eslint-plugin-prettier": "^5.2.1",
diff --git a/yarn.lock b/yarn.lock
index a837ca1..ba4e26d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -77,7 +77,7 @@ __metadata:
   resolution: "@navikt/eslint-config-teamsykmelding@workspace:."
   dependencies:
     "@typescript-eslint/eslint-plugin": "npm:7.18.0"
-    "@typescript-eslint/parser": "npm:7.18.0"
+    "@typescript-eslint/parser": "npm:8.3.0"
     eslint: "npm:^8.57.0"
     eslint-config-prettier: "npm:^9.1.0"
     eslint-plugin-import: "npm:^2.29.1"
@@ -172,21 +172,21 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/parser@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/parser@npm:7.18.0"
+"@typescript-eslint/parser@npm:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/parser@npm:8.3.0"
   dependencies:
-    "@typescript-eslint/scope-manager": "npm:7.18.0"
-    "@typescript-eslint/types": "npm:7.18.0"
-    "@typescript-eslint/typescript-estree": "npm:7.18.0"
-    "@typescript-eslint/visitor-keys": "npm:7.18.0"
+    "@typescript-eslint/scope-manager": "npm:8.3.0"
+    "@typescript-eslint/types": "npm:8.3.0"
+    "@typescript-eslint/typescript-estree": "npm:8.3.0"
+    "@typescript-eslint/visitor-keys": "npm:8.3.0"
     debug: "npm:^4.3.4"
   peerDependencies:
-    eslint: ^8.56.0
+    eslint: ^8.57.0 || ^9.0.0
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 10c0/370e73fca4278091bc1b657f85e7d74cd52b24257ea20c927a8e17546107ce04fbf313fec99aed0cc2a145ddbae1d3b12e9cc2c1320117636dc1281bcfd08059
+  checksum: 10c0/8185e7f1f570cded8719cfb1e8147fcbbc5b8796de628d68024d2929ce6fb02d1f6101b741161229e877be1c30c720701e1e1f7c4313dba33d4bb1190a85f705
   languageName: node
   linkType: hard
 
@@ -210,6 +210,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/scope-manager@npm:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/scope-manager@npm:8.3.0"
+  dependencies:
+    "@typescript-eslint/types": "npm:8.3.0"
+    "@typescript-eslint/visitor-keys": "npm:8.3.0"
+  checksum: 10c0/24d093505d444a07db88f9ab44af04eb738ce523ac3f98b0a641cf3a3ee38d18aff9f72bbf2b2e2d9f45e57c973f31016f1e224cd8ab773f6e7c3477c5a09ad3
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/type-utils@npm:7.18.0":
   version: 7.18.0
   resolution: "@typescript-eslint/type-utils@npm:7.18.0"
@@ -241,6 +251,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/types@npm:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/types@npm:8.3.0"
+  checksum: 10c0/5cd733af7ffa0cdaa5842f6c5e275b3a5c9b98dc49bf1bb9df1f0b51d346bef2a10a827d886f60492d502218a272e935cef50b4f7c69100217d5b10a2499c7b1
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/typescript-estree@npm:5.59.0":
   version: 5.59.0
   resolution: "@typescript-eslint/typescript-estree@npm:5.59.0"
@@ -278,6 +295,25 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/typescript-estree@npm:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/typescript-estree@npm:8.3.0"
+  dependencies:
+    "@typescript-eslint/types": "npm:8.3.0"
+    "@typescript-eslint/visitor-keys": "npm:8.3.0"
+    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"
+  peerDependenciesMeta:
+    typescript:
+      optional: true
+  checksum: 10c0/dd73aa1a9d7b5c7e6238e766e6ecdb6d87a9b28a24815258b7bbdc59c49fb525d3fe15d9b7c672e2220678f9d5fabdd9615e4cd5ee97a102fd46023ec0735d50
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/utils@npm:7.18.0":
   version: 7.18.0
   resolution: "@typescript-eslint/utils@npm:7.18.0"
@@ -330,6 +366,16 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@typescript-eslint/visitor-keys@npm:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/visitor-keys@npm:8.3.0"
+  dependencies:
+    "@typescript-eslint/types": "npm:8.3.0"
+    eslint-visitor-keys: "npm:^3.4.3"
+  checksum: 10c0/4c19216636f2cc25026fe20d2832d857f05c262eba78bc4159121c696199e44cac68443565959f9336372f7686a14b452867300cf4deb3c0507b8dbde88ac0e6
+  languageName: node
+  linkType: hard
+
 "@ungap/structured-clone@npm:^1.2.0":
   version: 1.2.0
   resolution: "@ungap/structured-clone@npm:1.2.0"
@@ -1127,7 +1173,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"fast-glob@npm:^3.2.9":
+"fast-glob@npm:^3.2.9, fast-glob@npm:^3.3.2":
   version: 3.3.2
   resolution: "fast-glob@npm:3.3.2"
   dependencies: