diff --git a/winston/winston.d.ts b/winston/winston.d.ts
index a3414d89e4..0dc80a57c3 100644
--- a/winston/winston.d.ts
+++ b/winston/winston.d.ts
@@ -185,6 +185,7 @@ declare module "winston" {
   export interface GenericTextTransportOptions {
     json?: boolean;
     colorize?: boolean;
+    colors?: any;
     prettyPrint?: boolean;
     timestamp?: (Function|boolean);
     showLevel?: boolean;