diff --git a/scripts/requirements.txt b/scripts/requirements.txt
index bad41b68..a06ea517 100644
--- a/scripts/requirements.txt
+++ b/scripts/requirements.txt
@@ -8,7 +8,7 @@ eth-keys==0.2.0b3
 eth-tester==0.1.0b21
 eth-utils==0.7.4
 idna==2.6
-pycryptodome==3.4.11
+pycryptodome==3.6.6
 pylru==1.0.9
 pysha3==1.0.2
 requests==2.18.4