diff --git a/package.json b/package.json
index 7f02cce7..da50a818 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@sphereon/pex",
-  "version": "2.1.0",
+  "version": "2.1.1-unstable.0",
   "description": "A Typescript implementation of the v1 and v2 DIF Presentation Exchange specification",
   "main": "dist/main/index.js",
   "module": "dist/module/index.js",
@@ -42,7 +42,7 @@
   },
   "dependencies": {
     "@sphereon/pex-models": "^2.0.3",
-    "@sphereon/ssi-types": "^0.13.0",
+    "@sphereon/ssi-types": "^0.15.1",
     "ajv": "^8.12.0",
     "ajv-formats": "^2.1.1",
     "@astronautlabs/jsonpath": "^1.1.2",