diff --git a/requirements_dev.txt b/requirements_dev.txt
index 7d815bb..8428908 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -4,7 +4,7 @@ wheel==0.36.2
 watchdog==2.0.2
 flake8==3.8.4
 tox==3.23.0
-coverage==5.3.1
+coverage==5.5
 Sphinx==3.4.3
 cryptography==3.4.6
 PyYAML==5.4.1