diff --git a/pubspec.yaml b/pubspec.yaml
index 1f34196d..17f3f634 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -8,6 +8,7 @@ environment:
 dependencies: 
   angel_framework: ^2.0.0-alpha
   angel_http_exception: ^1.0.0
+  crypto: ^2.0.0
 dev_dependencies: 
   angel_validate: ^2.0.0-alpha
   angel_test: ^2.0.0-alpha