diff --git a/requirements.txt b/requirements.txt
index 5cbb0625e..5add95280 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 cffi>=1.8
-cryptography==1.4
+cryptography>=1.4
 Django>=1.10
 django-debug-toolbar>=1.6
 django-filter==0.13.0