diff --git a/dev-requirements.txt b/dev-requirements.txt
index e9f3199..2ee9c23 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,5 +1,5 @@
 mock==4.0.2
-mypy==0.780
+mypy==0.781
 pylint==2.5.3
 pytest==5.4.3
 pytest-cov==2.10.0
\ No newline at end of file