diff --git a/requirements.txt b/requirements.txt
index eb9a6e5e..6a48c861 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,6 +4,7 @@ asyncio==3.4.3
 attrs==21.4.0
 bech32==1.2.0
 bitstring==3.1.9
+cashu==0.4.2
 cerberus==1.3.4
 certifi==2022.6.15
 cffi==1.15.0