diff --git a/pyproject.toml b/pyproject.toml
index 3dad7b5..6a7da4a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ dev = [
     "pytest-cov>=4.0.0",
     "black>=23.0.0",
     "ruff>=0.1.0",
-    "mypy>=1.0.0",
+    "mypy>=1.20.1",
 ]
 
 [project.scripts]