diff --git a/requirements.txt b/requirements.txt
index 9580187..f80ba79 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ pandas
 black==22.12.0
 pylint>=2.7.0
 isort>=5.2.1
-mypy==0.991
+mypy==1.1.1
 pre-commit>=2.15.0
 
 # documentation