diff --git a/contrib/requirements/requirements.txt b/contrib/requirements/requirements.txt
index 0f12eee74..a154cebc7 100644
--- a/contrib/requirements/requirements.txt
+++ b/contrib/requirements/requirements.txt
@@ -7,8 +7,8 @@ aiohttp_socks>=0.9.2
 certifi
 attrs>=20.1.0
 jsonpatch
-electrum_ecc>=0.0.4
-electrum_aionostr>=0.0.8
+electrum_ecc>=0.0.4,<0.1
+electrum_aionostr>=0.0.8,<0.1
 
 # Note that we also need the dnspython[DNSSEC] extra which pulls in cryptography,
 # but as that is not pure-python it cannot be listed in this file!