diff --git a/test-requirements.txt b/test-requirements.txt
index 008cf5e..1e351ec 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@ atomicwrites==1.3.0
 attrs==19.1.0
 colorama==0.4.1 
 filelock==3.0.12
-coverage==5.0a5
+coverage==5.0a6
 filelock==3.0.10
 flake8==3.7.7
 mccabe==0.6.1