diff --git a/internal/nodejs/nextjs/function.go b/internal/nodejs/nextjs/function.go
index 052aad33..3dd104f5 100644
--- a/internal/nodejs/nextjs/function.go
+++ b/internal/nodejs/nextjs/function.go
@@ -35,7 +35,7 @@ func constructNextFunction(zeaburOutputDir, firstFuncPage, tmpDir string) error
 		return fmt.Errorf("copy .next: %w", err)
 	}
 
-	err = cp.Copy("package.json", path.Join(p, "package.json"))
+	err = cp.Copy(path.Join(tmpDir, "package.json"), path.Join(p, "package.json"))
 	if err != nil {
 		return fmt.Errorf("copy package.json: %w", err)
 	}