diff --git a/package.json b/package.json
index 4921413..8532445 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "test": "eslint --config=index.js"
   },
   "dependencies": {
-    "@typescript-eslint/eslint-plugin": "7.18.0",
+    "@typescript-eslint/eslint-plugin": "8.3.0",
     "@typescript-eslint/parser": "7.18.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-import": "^2.29.1",
diff --git a/yarn.lock b/yarn.lock
index a837ca1..095874a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -76,7 +76,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "@navikt/eslint-config-teamsykmelding@workspace:."
   dependencies:
-    "@typescript-eslint/eslint-plugin": "npm:7.18.0"
+    "@typescript-eslint/eslint-plugin": "npm:8.3.0"
     "@typescript-eslint/parser": "npm:7.18.0"
     eslint: "npm:^8.57.0"
     eslint-config-prettier: "npm:^9.1.0"
@@ -149,26 +149,26 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/eslint-plugin@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/eslint-plugin@npm:7.18.0"
+"@typescript-eslint/eslint-plugin@npm:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/eslint-plugin@npm:8.3.0"
   dependencies:
     "@eslint-community/regexpp": "npm:^4.10.0"
-    "@typescript-eslint/scope-manager": "npm:7.18.0"
-    "@typescript-eslint/type-utils": "npm:7.18.0"
-    "@typescript-eslint/utils": "npm:7.18.0"
-    "@typescript-eslint/visitor-keys": "npm:7.18.0"
+    "@typescript-eslint/scope-manager": "npm:8.3.0"
+    "@typescript-eslint/type-utils": "npm:8.3.0"
+    "@typescript-eslint/utils": "npm:8.3.0"
+    "@typescript-eslint/visitor-keys": "npm:8.3.0"
     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": ^7.0.0
-    eslint: ^8.56.0
+    "@typescript-eslint/parser": ^8.0.0 || ^8.0.0-alpha.0
+    eslint: ^8.57.0 || ^9.0.0
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 10c0/2b37948fa1b0dab77138909dabef242a4d49ab93e4019d4ef930626f0a7d96b03e696cd027fa0087881c20e73be7be77c942606b4a76fa599e6b37f6985304c3
+  checksum: 10c0/d5242b16b8602ab5817cf04b35ac7208b6bee530730eeed6eab886667d1f2c5fac1537b3e33c453393090a1c6fcd50f727c07f5168985a00e7d23d1f99576988
   languageName: node
   linkType: hard
 
@@ -210,20 +210,28 @@ __metadata:
   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"
+"@typescript-eslint/scope-manager@npm:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/scope-manager@npm:8.3.0"
   dependencies:
-    "@typescript-eslint/typescript-estree": "npm:7.18.0"
-    "@typescript-eslint/utils": "npm:7.18.0"
+    "@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:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/type-utils@npm:8.3.0"
+  dependencies:
+    "@typescript-eslint/typescript-estree": "npm:8.3.0"
+    "@typescript-eslint/utils": "npm:8.3.0"
     debug: "npm:^4.3.4"
     ts-api-utils: "npm:^1.3.0"
-  peerDependencies:
-    eslint: ^8.56.0
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 10c0/ad92a38007be620f3f7036f10e234abdc2fdc518787b5a7227e55fd12896dacf56e8b34578723fbf9bea8128df2510ba8eb6739439a3879eda9519476d5783fd
+  checksum: 10c0/0e4b42ff2bfcd1727893bb7fe5fcf1aa808b45b5f690c249c68ce7aff68ddfba3d8b1565de2f08972915df23fa7ab114c09f507668e9b0b63faf1e34a5091706
   languageName: node
   linkType: hard
 
@@ -241,6 +249,13 @@ __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"
@@ -278,17 +293,36 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/utils@npm:7.18.0":
-  version: 7.18.0
-  resolution: "@typescript-eslint/utils@npm:7.18.0"
+"@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:8.3.0":
+  version: 8.3.0
+  resolution: "@typescript-eslint/utils@npm:8.3.0"
   dependencies:
     "@eslint-community/eslint-utils": "npm:^4.4.0"
-    "@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/scope-manager": "npm:8.3.0"
+    "@typescript-eslint/types": "npm:8.3.0"
+    "@typescript-eslint/typescript-estree": "npm:8.3.0"
   peerDependencies:
-    eslint: ^8.56.0
-  checksum: 10c0/a25a6d50eb45c514469a01ff01f215115a4725fb18401055a847ddf20d1b681409c4027f349033a95c4ff7138d28c3b0a70253dfe8262eb732df4b87c547bd1e
+    eslint: ^8.57.0 || ^9.0.0
+  checksum: 10c0/e4e9e820cf4b4775bb66b2293a2a827897edaba88577b63df317b50752a01d542be521cc4842976fbbd93e08b9e273ce9d20e23768d06de68a83d68cc0f68a93
   languageName: node
   linkType: hard
 
@@ -330,6 +364,16 @@ __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 +1171,7 @@ __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: