diff --git a/pyproject.toml b/pyproject.toml
index d0931a1..b04a496 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -85,7 +85,7 @@ optional-dependencies.all = [
   "cratedb-about[manyio,llm]",
 ]
 optional-dependencies.develop = [
-  "mypy<1.18",
+  "mypy<1.19",
   "poethepoet<1",
   "pyproject-fmt<3",
   "ruff<0.14",