diff --git a/pyproject.toml b/pyproject.toml
index 8d722df0..126b5c97 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -71,7 +71,7 @@ optional-dependencies.dev = [
     "pylint==3.3.6",
     "pylint-per-file-ignores==1.4.0",
     "pyproject-fmt==2.5.1",
-    "pyright==1.1.399",
+    "pyright==1.1.400",
     "pyroma==4.2",
     "pytest==8.3.5",
     "pytest-cov==6.1.1",