diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5107f94..f7b18f7 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -4,7 +4,7 @@ bandit==1.7.1
 coverage==6.2
 docutils==0.18.1
 flake8==4.0.1
-mypy==0.910
+mypy==0.920
 pyroma==3.2
 pytest-cov==3.0.0
 pytest==6.2.5