diff --git a/requirements-test.txt b/requirements-test.txt
index 733de913a70a8e4a5cbbc998d5fa6f8d91693894..46b5ff16c2d90d9e507857e2e5dc0c907c3962c7 100644
--- a/requirements-test.txt
+++ b/requirements-test.txt
@@ -6,7 +6,7 @@ ecdsa==0.13
 requests==2.19.1
 websocket-client==0.48.0
 pytz==2018.5
-pycryptodomex==3.6.3
+pycryptodomex==3.6.4
 scrypt==0.8.6
 Events==0.3
 secp256k1==0.13.2