diff --git a/pkgs/development/python-modules/twilio/default.nix b/pkgs/development/python-modules/twilio/default.nix
index b5ce76c79888..eba5ba75747d 100644
--- a/pkgs/development/python-modules/twilio/default.nix
+++ b/pkgs/development/python-modules/twilio/default.nix
@@ -1,5 +1,6 @@
 { lib
 , buildPythonPackage
+, cryptography
 , django
 , fetchFromGitHub
 , mock
@@ -32,6 +33,7 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
+    cryptography
     django
     mock
     multidict