diff --git a/pkgs/by-name/py/pyrefly/package.nix b/pkgs/by-name/py/pyrefly/package.nix
index 896d4a94bce0..7689d016264b 100644
--- a/pkgs/by-name/py/pyrefly/package.nix
+++ b/pkgs/by-name/py/pyrefly/package.nix
@@ -10,17 +10,17 @@
 }:
 rustPlatform.buildRustPackage (finalAttrs: {
   pname = "pyrefly";
-  version = "0.62.0";
+  version = "0.63.1";
 
   src = fetchFromGitHub {
     owner = "facebook";
     repo = "pyrefly";
     tag = finalAttrs.version;
-    hash = "sha256-5KGHm4dtpqeabv+Qw2FK4GvE5K6saUfyVInTrd3+MWI=";
+    hash = "sha256-BP3I+/YUkgURIQBptHieuHPrdkiJ/H08arL2QZ3jhZ4=";
   };
 
   buildAndTestSubdir = "pyrefly";
-  cargoHash = "sha256-MWnz6KGrKduC2CmLcojd7I6C3M8PR9k3FgCWU+X+KCo=";
+  cargoHash = "sha256-41EaxJ2VsIkAe9OsV5zUfkxGBxACxmWoM1Imqoah8mI=";
 
   buildInputs = [ rust-jemalloc-sys ];