diff --git a/pyproject.toml b/pyproject.toml
index f7f06ad1..431b5961 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,7 @@ optional-dependencies.dev = [
     "pylint[spelling]==4.0.5",
     "pylint-per-file-ignores==3.2.1",
     "pyproject-fmt==2.21.2",
-    "pyrefly==0.63.1",
+    "pyrefly==0.64.0",
     "pyright==1.1.409",
     "pyroma==5.0.1",
     "pytest==9.0.3",