diff --git a/test-requirements.txt b/test-requirements.txt
index 26f82b0..7899496 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,5 +1,5 @@
 pytest==5.4.1;python_version>'3.0'
-pytest-cov==2.8.1
+pytest-cov==2.9.0
 #pytest-datadir
 #pytest-mpl
 #pytest-regtest