diff --git a/pyproject.toml b/pyproject.toml
index 1f0d4f3f8d..1b28b7f0c9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,7 +15,7 @@ dependencies = [
 
 [dependency-groups]
 dev = [
-    "mypy~=1.20",
+    "mypy>=1.20,<3.0",
     "pre-commit~=4.3",
     "pytest~=9.0",
     "ruff>=0.15.5",