diff --git a/pyproject.toml b/pyproject.toml
index fe033f2c..99d77cfd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ test = [
     "black==25.1.0",
     "filelock==3.18.0",
     "flake8==7.2.0",
-    "pyright==1.1.398",
+    "pyright==1.1.399",
     "pytest==8.3.5",
     "pytest-xdist==3.6.1",
 ]