diff --git a/requirements.txt b/requirements.txt
index 5df9c30..963c799 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,6 +3,7 @@
 decorator>=3.4.0
 docker-py
 fluent-logger>=0.4.3
+hexdump>=3.3
 klein>=15.3.1
 nose>=1.3.7
 mock>=1.3.0