diff --git a/pyproject.toml b/pyproject.toml
index 5784970..6462875 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ graph = [
 dev = [
     'black==23.7.0',
     'coverage==7.2.7',
-    'mypy==1.4.1',
+    'mypy==1.5.0',
 ]
 publish = [
     'flit==3.9.0',