diff --git a/types.d.ts b/types.d.ts
index 5efae9986..3971d45ef 100644
--- a/types.d.ts
+++ b/types.d.ts
@@ -4351,6 +4351,16 @@ declare class NodeEnvironmentPlugin {
  * Options object for node compatibility features.
  */
 declare interface NodeOptions {
+	/**
+	 * Include a polyfill for the '__dirname' variable.
+	 */
+	__dirname?: boolean | "mock";
+
+	/**
+	 * Include a polyfill for the '__filename' variable.
+	 */
+	__filename?: boolean | "mock";
+
 	/**
 	 * Include a polyfill for the 'global' variable.
 	 */