diff --git a/requirements.txt b/requirements.txt
index 3c861fd..efa5b66 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ prettytable==0.7.2
 proglog==0.1.9
 protobuf==3.6.1
 pycairo==1.16.2
-pycrypto==2.6.1
+pycrypto>2.6.1
 pycups==1.9.73
 pydbus==0.6.0
 pymacaroons==0.13.0