diff --git a/packages/redact/lib/types/transactionParams.ts b/packages/redact/lib/types/transactionParams.ts
index ac8cbafc..b12f9e37 100644
--- a/packages/redact/lib/types/transactionParams.ts
+++ b/packages/redact/lib/types/transactionParams.ts
@@ -18,5 +18,5 @@ export type TransactionParams = {
   /**
    * Required if redacting SMS data. Must be one of: inbound, outbound.
    */
-  type: Type;
+  type?: Type;
 };