diff --git a/regression-exponential.d.ts b/regression-exponential.d.ts
index b099e46..3eb8af0 100644
--- a/regression-exponential.d.ts
+++ b/regression-exponential.d.ts
@@ -3,6 +3,8 @@ import BaseRegression from 'ml-regression-base';
 declare namespace ExponentialRegression {
   export interface ExponentialRegressionModel {
     name: 'exponentialRegression';
+    A: number;
+    B: number;
   }
 }