diff --git a/dev-requirements.txt b/dev-requirements.txt
index 889ae33..3884021 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -9,4 +9,4 @@ flake8-builtins==1.5.2
 flake8-comprehensions==3.2.2
 flake8-mutable==1.2.0
 flake8-tuple==0.4.1
-coverage==5.0.4
+coverage==5.1