diff --git a/pyproject.toml b/pyproject.toml
index abe684856..7691cd66e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -65,7 +65,7 @@ dev = [
     "pylint[spelling]==4.1.3",
     "pylint-per-file-ignores==4.0.0",
     "pyproject-fmt==2.30.3",
-    "pyrefly==1.3.2",
+    "pyrefly==1.4.0",
     "pyright==1.1.414",
     "pyroma==5.0.1",
     "pytest==9.1.1",