diff --git a/packages/next/bundles/webpack/packages/webpack.d.ts b/packages/next/bundles/webpack/packages/webpack.d.ts
index e2a4f8f9d7963ac..414c145be49046d 100644
--- a/packages/next/bundles/webpack/packages/webpack.d.ts
+++ b/packages/next/bundles/webpack/packages/webpack.d.ts
@@ -2,3 +2,9 @@ export namespace webpack {
   export type Compiler = any
   export type Plugin = any
 }
+
+export namespace webpack5 {
+  export type Compiler = any
+  export type Plugin = any
+  export type Configuration = any
+}
diff --git a/packages/next/compiled/webpack/webpack.d.ts b/packages/next/compiled/webpack/webpack.d.ts
index e2a4f8f9d7963ac..414c145be49046d 100644
--- a/packages/next/compiled/webpack/webpack.d.ts
+++ b/packages/next/compiled/webpack/webpack.d.ts
@@ -2,3 +2,9 @@ export namespace webpack {
   export type Compiler = any
   export type Plugin = any
 }
+
+export namespace webpack5 {
+  export type Compiler = any
+  export type Plugin = any
+  export type Configuration = any
+}