diff --git a/dev-requirements.txt b/dev-requirements.txt
index 18dd35be..e912e55f 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -6,7 +6,7 @@ m2r==0.2.1
 pytest-vcr==1.0.2
 pytest-cov==2.7.1
 pytest==5.3.5
-codecov==2.0.16
+codecov==2.0.21
 setuptools==46.0.0
 pre-commit==1.20.0
 pip==19.0.3