diff --git a/pyproject.toml b/pyproject.toml
index aac8ad7..fe3bea6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ pyyaml = "6.0"
 requests = "~2.28"
 
 [tool.poetry.dev-dependencies]
-mypy = "0.991"
+mypy = "1.0.0"
 pylint = "~2.16"
 rope = "~1.7"
 types-PyYAML = "~6.0"