diff --git a/requirements.txt b/requirements.txt
index 59e19ca..b12bba1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ psycopg2==2.8.4
 psycopg2-binary==2.8.4
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
-pycryptodome==3.4.3
+pycryptodome==3.6.6
 Pyrebase==3.0.27
 python-jwt==2.0.1
 pytz==2019.3