diff --git a/pyproject.toml b/pyproject.toml
index dd16b87..c065114 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ scs = "sc_supertree.cli:scs"
 dev = [
   "ruff==0.14.8",
   "click==8.3.1",
-  "mypy==1.19.0",
+  "mypy==1.19.1",
   "docformatter",
   "flit",
   "pytest",