diff --git a/package-lock.json b/package-lock.json
index 756d6a0c..9d3ec410 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "globals": "^17.0.0",
         "js-yaml": "^5.0.0",
         "prettier": "3.9.6",
-        "typescript": "^5.0.0"
+        "typescript": "^6.0.0"
       }
     },
     "node_modules/@actions/core": {
@@ -1881,20 +1881,6 @@
         "semver": "bin/semver.js"
       }
     },
-    "node_modules/eslint-plugin-github/node_modules/typescript": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.3.tgz",
-      "integrity": "sha512-y2TvuxSZPDyQakkFRPZHKFm+KKVqIisdg9/CZwm9ftvKXLP8NRWj38/ODjNbr43SsoXqNuAisEf1GdCxqWcdBw==",
-      "dev": true,
-      "license": "Apache-2.0",
-      "bin": {
-        "tsc": "bin/tsc",
-        "tsserver": "bin/tsserver"
-      },
-      "engines": {
-        "node": ">=14.17"
-      }
-    },
     "node_modules/eslint-plugin-i18n-text": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/eslint-plugin-i18n-text/-/eslint-plugin-i18n-text-1.0.1.tgz",
@@ -4112,9 +4098,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.9.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
-      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "version": "6.0.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.3.tgz",
+      "integrity": "sha512-y2TvuxSZPDyQakkFRPZHKFm+KKVqIisdg9/CZwm9ftvKXLP8NRWj38/ODjNbr43SsoXqNuAisEf1GdCxqWcdBw==",
       "dev": true,
       "license": "Apache-2.0",
       "peer": true,
diff --git a/package.json b/package.json
index 4d5ebfe8..5b7ec132 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,6 @@
     "globals": "^17.0.0",
     "js-yaml": "^5.0.0",
     "prettier": "3.9.6",
-    "typescript": "^5.0.0"
+    "typescript": "^6.0.0"
   }
 }
diff --git a/src/issue.ts b/src/issue.ts
index 39b4b2f6..58be2991 100644
--- a/src/issue.ts
+++ b/src/issue.ts
@@ -17,8 +17,4 @@ export class Issue {
 
 export type GitHubSeverity = 'notice' | 'warning' | 'error'
 export type ReSharperSeverity =
-  | 'INFO'
-  | 'HINT'
-  | 'SUGGESTION'
-  | 'WARNING'
-  | 'ERROR'
+  'INFO' | 'HINT' | 'SUGGESTION' | 'WARNING' | 'ERROR'
diff --git a/tsconfig.json b/tsconfig.json
index b83f55a5..1b3ce08a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -7,7 +7,8 @@
     "strict": true,                           /* Enable all strict type-checking options. */
     "noImplicitAny": true,                    /* Raise error on expressions and declarations with an implied 'any' type. */
     "esModuleInterop": true,                  /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
-    "resolveJsonModule": true
+    "resolveJsonModule": true,
+    "types": ["node"]
   },
   "exclude": ["node_modules", "**/*.test.ts", "__tests__/**/*"]
 }