diff --git a/dev-requirements.txt b/dev-requirements.txt
index 32ff308..93e0134 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,4 +1,4 @@
 pytest==3.2.5
-coverage==4.3.1
+coverage==4.5.1
 cython==0.28.2
 tox==2.5.0