diff --git a/pyproject.toml b/pyproject.toml
index c0f5b45..05b7f59 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ test = [
     "flake8==7.2.0",
     "greenlet",
     "hatch",
-    "mypy==1.15.0",
+    "mypy==1.18.2",
     "opentelemetry-api~=1.0",
     "opentelemetry-sdk~=1.0",
     "pycodestyle",