diff --git a/types/webpack/index.d.ts b/types/webpack/index.d.ts
index 0339a4ebb5..582759819b 100644
--- a/types/webpack/index.d.ts
+++ b/types/webpack/index.d.ts
@@ -1132,6 +1132,8 @@ declare namespace webpack {
             assets?: boolean;
             /** Sort assets by a field */
             assetsSort?: string;
+            /** Add built at time information */
+            builtAt?: boolean;
             /** Add information about cached (not built) modules */
             cached?: boolean;
             /** Show cached assets (setting this to `false` only shows emitted files) */
diff --git a/types/webpack/webpack-tests.ts b/types/webpack/webpack-tests.ts
index b7b9ca8913..913eea0b19 100644
--- a/types/webpack/webpack-tests.ts
+++ b/types/webpack/webpack-tests.ts
@@ -383,6 +383,7 @@ webpack({
     const jsonStatsWithAllOptions = stats.toJson({
         assets: true,
         assetsSort: "field",
+        builtAt: true,
         cached: true,
         children: true,
         chunks: true,