diff --git a/verifiers-reference-implementation/python-server/requirements.txt b/verifiers-reference-implementation/python-server/requirements.txt
index 6784ffa..7b12c2e 100644
--- a/verifiers-reference-implementation/python-server/requirements.txt
+++ b/verifiers-reference-implementation/python-server/requirements.txt
@@ -1,6 +1,6 @@
 Flask==2.2.5
 cryptography==41.0.1
-cbor2==5.4.6
+cbor2==5.9.0
 gunicorn==20.1.0
 isomdoc==0.0.4
 pycose