diff --git a/dev-requirements.txt b/dev-requirements.txt
index ccb3bbcb..6ae9c508 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -5,5 +5,5 @@ pynacl==1.2.1
 six==1.11.0
 tox==2.9.1
 coveralls==1.2.0
-coverage==4.4.2
+coverage==4.5.1
 colorama==0.3.9