diff --git a/pyproject.toml b/pyproject.toml
index c84156d..01fcc5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -62,7 +62,7 @@ dev = [
     "pytest-benchmark>=5.0",
     "pytest-cov>=6.0",
     "ruff>=0.8",
-    "mypy>=1.13",
+    "mypy>=1.20.0",
     "twine>=6.1",
 ]
 all = ["synaps[ml,llm,rl,dev]"]