diff --git a/dev-requirements.txt b/dev-requirements.txt
index 2f1d0d60..4310cb16 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -17,4 +17,7 @@
 # http://nvie.com/posts/pin-your-packages/
 pycrypto==2.6.1
 pynacl==0.2.3
+
+# Testing requirements.  The rest of the testing dependencies available in
+# 'tox.ini'
 tox
diff --git a/tox.ini b/tox.ini
index 36329a74..0c586e04 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,6 +19,7 @@ deps =
     pynacl
     pycrypto
 
+
 [testenv:py26]
 deps =
     {[testenv]deps}