diff --git a/dev-requirements.txt b/dev-requirements.txt
index f706c46..cdd120a 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,2 +1,2 @@
-tox>=1.4,<1.5
-epydoc>=3.0,<3.1
+tox>=1.4
+epydoc>=3.0