diff --git a/package-lock.json b/package-lock.json
index ac5fd69..d1a77d4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -40,7 +40,7 @@
         "jest": "^30.1.3",
         "prettier": "3.8.3",
         "ts-jest": "^29.1.4",
-        "typescript": "~5.9.2",
+        "typescript": "~6.0.3",
         "typescript-eslint": "^8.58.0"
       },
       "engines": {
@@ -6403,9 +6403,9 @@
       }
     },
     "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",
       "bin": {
diff --git a/package.json b/package.json
index 725b029..0544f52 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "jest": "^30.1.3",
     "prettier": "3.8.3",
     "ts-jest": "^29.1.4",
-    "typescript": "~5.9.2",
+    "typescript": "~6.0.3",
     "typescript-eslint": "^8.58.0"
   },
   "homepage": "https://github.com/Azure/openapi-diff",
diff --git a/tsconfig.json b/tsconfig.json
index 12e1c91..25699c1 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -42,7 +42,7 @@
     // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
     // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
     // "typeRoots": [],                       /* List of folders to include type definitions from. */
-    // "types": [],                           /* Type declaration files to be included in compilation. */
+    "types": ["jest", "node"],                /* required by typescript v6 */
     // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
     "esModuleInterop": true,                   /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
     // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */