diff --git a/chai/index.d.ts b/chai/index.d.ts
index 79e08a16b1..44750136c8 100644
--- a/chai/index.d.ts
+++ b/chai/index.d.ts
@@ -163,6 +163,8 @@ declare namespace Chai {
 
     interface Deep {
         equal: Equal;
+        equals: Equal;
+        eq: Equal;
         include: Include;
         property: Property;
         members: Members;