diff --git a/types/chai/index.d.ts b/types/chai/index.d.ts
index d260973b71..6f0edecc06 100644
--- a/types/chai/index.d.ts
+++ b/types/chai/index.d.ts
@@ -186,6 +186,7 @@ declare namespace Chai {
         property: Property;
         members: Members;
         ordered: Ordered;
+        nested: Nested;
     }
 
     interface Ordered {