diff --git a/requirements_dev.txt b/requirements_dev.txt
index 273f59b..56e7acb 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ pytest-runner==5.2
 bumpversion==0.6.0
 watchdog==0.10.3
 flake8==3.8.4
-coverage==5.3
+coverage==6.4.2
 cryptography==3.4.6
 Sphinx==3.3.1
 sphinx-rtd-theme==0.5.0