diff --git a/tests/requirements.txt b/tests/requirements.txt
index cfacc3f..3b6e316 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,7 +1,7 @@
 coverage==4.4.1
 flake8==3.4.1
 isort==4.2.15
-mypy==0.521
+mypy==0.530
 pycodestyle==2.3.1
 pyflakes==1.6.0
 pytest==3.2.1