diff --git a/src/aws.app.src b/src/aws.app.src
index 55fa59c5..84c62bd9 100644
--- a/src/aws.app.src
+++ b/src/aws.app.src
@@ -9,6 +9,7 @@
      , erlware_commons
      , hackney
      , jsx
+     , aws_signature
      ]
    }
  , {env,[]}