diff --git a/shamirss.py b/shamirss.py
index f75492c..f090159 100644
--- a/shamirss.py
+++ b/shamirss.py
@@ -24,9 +24,11 @@
 
 import functools
 import operator
-import random
+import secrets
 import unittest.mock
 
+random = secrets.SystemRandom()
+
 def _makered(x, y):
 	'''Make reduction table entry.