diff --git a/pyproject.toml b/pyproject.toml
index 8f47d20..f14258d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dependencies = []
 dev = [
     "ruff>=0.16.3,<1",     # linter + formatter
     "pytest>=9.1,<10",     # test runner
-    "pyright>=1.1,<2",     # static type checker
+    "pyright>=1.1.411,<2",     # static type checker
     "codespell>=2.4,<3",   # spell checker (code, comments, docs)
 ]
 # Docs site toolchain (Sphinx + MyST + furo). Install with `uv pip install -e '.[docs]'`.