diff --git a/index.d.ts b/index.d.ts
index bb24d62..e7af83e 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -2,30 +2,30 @@ export = precinct;
 /**
  * Finds the list of dependencies for the given file
  *
- * @param {String|Object} content - File's content or AST
- * @param {Object} [options]
- * @param {String} [options.type] - The type of content being passed in. Useful if you want to use a non-JS detective
+ * @param {string|object} content - File's content or AST
+ * @param {object} [options]
+ * @param {string} [options.type] - The type of content being passed in. Useful if you want to use a non-JS detective
  * @param {Record<string, any>} [options.walker] - Options to pass to node-source-walk
- * @return {String[]}
+ * @return {string[]}
  */
-declare function precinct(content: string | any, options?: {
-    type?: string;
-    walker?: Record<string, any>;
+declare function precinct(content: string | object, options?: {
+    type?: string | undefined;
+    walker?: Record<string, any> | undefined;
 }): string[];
 declare namespace precinct {
     /**
      * Returns the dependencies for the given file path
      *
-     * @param {String} filename
-     * @param {Object} [options]
-     * @param {Boolean} [options.includeCore=true] - Whether or not to include core modules in the dependency list
-     * @param {Object} [options.fileSystem=undefined] - An alternative fs implementation to use for reading the file path.
+     * @param {string} filename
+     * @param {object} [options]
+     * @param {boolean} [options.includeCore=true] - Whether or not to include core modules in the dependency list
+     * @param {object} [options.fileSystem=undefined] - An alternative fs implementation to use for reading the file path.
      * @param {Record<string, any>} [options.walker] - Options to pass to node-source-walk
-     * @return {String[]}
+     * @return {string[]}
      */
     function paperwork(filename: string, options?: {
-        includeCore?: boolean;
-        fileSystem?: any;
-        walker?: Record<string, any>;
+        includeCore?: boolean | undefined;
+        fileSystem?: object | undefined;
+        walker?: Record<string, any> | undefined;
     }): string[];
 }
diff --git a/index.js b/index.js
index 1cc47a9..351a3bc 100644
--- a/index.js
+++ b/index.js
@@ -22,11 +22,11 @@ const debug = debuglog('precinct');
 /**
  * Finds the list of dependencies for the given file
  *
- * @param {String|Object} content - File's content or AST
- * @param {Object} [options]
- * @param {String} [options.type] - The type of content being passed in. Useful if you want to use a non-JS detective
+ * @param {string|object} content - File's content or AST
+ * @param {object} [options]
+ * @param {string} [options.type] - The type of content being passed in. Useful if you want to use a non-JS detective
  * @param {Record<string, any>} [options.walker] - Options to pass to node-source-walk
- * @return {String[]}
+ * @return {string[]}
  */
 function precinct(content, options = {}) {
   debug('options given: %o', options);
@@ -81,12 +81,12 @@ function precinct(content, options = {}) {
 /**
  * Returns the dependencies for the given file path
  *
- * @param {String} filename
- * @param {Object} [options]
- * @param {Boolean} [options.includeCore=true] - Whether or not to include core modules in the dependency list
- * @param {Object} [options.fileSystem=undefined] - An alternative fs implementation to use for reading the file path.
+ * @param {string} filename
+ * @param {object} [options]
+ * @param {boolean} [options.includeCore=true] - Whether or not to include core modules in the dependency list
+ * @param {object} [options.fileSystem=undefined] - An alternative fs implementation to use for reading the file path.
  * @param {Record<string, any>} [options.walker] - Options to pass to node-source-walk
- * @return {String[]}
+ * @return {string[]}
  */
 precinct.paperwork = (filename, options = {}) => {
   options = { includeCore: true, ...options };
diff --git a/package-lock.json b/package-lock.json
index 3629c9a..dc22cd0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
         "module-definition": "^6.0.2",
         "node-source-walk": "^7.0.2",
         "postcss": "^8.5.14",
-        "typescript": "^5.9.3"
+        "typescript": "^6.0.3"
       },
       "bin": {
         "precinct": "bin/cli.js"
@@ -8235,9 +8235,9 @@
       }
     },
     "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==",
       "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
@@ -8922,6 +8922,20 @@
         "node": "*"
       }
     },
+    "node_modules/xo/node_modules/typescript": {
+      "version": "5.9.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
+      "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index 62f96da..34d86a5 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "module-definition": "^6.0.2",
     "node-source-walk": "^7.0.2",
     "postcss": "^8.5.14",
-    "typescript": "^5.9.3"
+    "typescript": "^6.0.3"
   },
   "devDependencies": {
     "c8": "^10.1.3",