diff --git a/test-requirements.txt b/test-requirements.txt
index c923e18..cf89d59 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,3 +1,3 @@
 -r build-requirements.txt
 pytest==4.6.2
-coverage==4.5.4
+coverage==5.5