diff --git a/requirements-dev.txt b/requirements-dev.txt
index cd02f10..ed2672f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -8,4 +8,4 @@ pycodestyle==2.5.0
 pyflakes==2.1.1
 requests==2.21.0
 urllib3==1.25
-pytest-cov==2.6.1
+pytest-cov==2.12.1