diff --git a/dev-requirements.txt b/dev-requirements.txt
index 9515b3b..dd4b91c 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,5 +1,5 @@
 mock==4.0.2
-mypy==0.730
+mypy==0.780
 pylint==2.4.3
 pytest==5.0.1
 pytest-cov==2.7.1
\ No newline at end of file