diff --git a/types/sequelize/v3/index.d.ts b/types/sequelize/v3/index.d.ts
index eafa70b641..11b6775846 100644
--- a/types/sequelize/v3/index.d.ts
+++ b/types/sequelize/v3/index.d.ts
@@ -4339,7 +4339,7 @@ declare namespace sequelize {
          *
          * PostgreSQL only
          */
-        deferrable?: Deferrable;
+        deferrable?: DeferrableInitiallyDeferred | DeferrableInitiallyImmediate | DeferrableNot | DeferrableSetDeferred | DeferrableSetImmediate;
 
     }