diff --git a/openpgp.d.ts b/openpgp.d.ts
index 6d724f095..e71e608dc 100644
--- a/openpgp.d.ts
+++ b/openpgp.d.ts
@@ -310,6 +310,7 @@ export namespace config {
   let ignoreMdcError: boolean;
   let checksumRequired: boolean;
   let rsaBlinding: boolean;
+  let minRsaBits: number;
   let passwordCollisionCheck: boolean;
   let revocationsExpire: boolean;
   let useNative: boolean;