diff --git a/packages/types/package.json b/packages/types/package.json
index 100328b..069d7cd 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@libsem/types",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Common type definitions for Semaphore modules.",
   "main": "src/index.ts",
   "types": "dist/index.d.ts",
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 26133a0..4ef63ff 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -13,3 +13,6 @@ export interface MerkleProof {
   indices: Array<any>
   pathElements: Array<any>
 }
+
+export type IdentityFactoryMetadata = {} | { signedMessage: string } |
+{ identityNullifier: bigint, identityTrapdoor: bigint }