diff --git a/nix/pkgs/jj.nix b/nix/pkgs/jj.nix
index 3b60a9e43b..cb23aeaca8 100644
--- a/nix/pkgs/jj.nix
+++ b/nix/pkgs/jj.nix
@@ -22,8 +22,8 @@ let
   rust-overlay-src = (pkgs.fetchFromGitHub {
     owner = "oxalica";
     repo = "rust-overlay";
-    rev = "2b00881d2ff72174cffdc007238cb6bedd6e1d8e";
-    hash = "sha256-+OB00N6Yql/ZRQQkQ0PNnxfW2tH89DHnv29hBS7tXMM=";
+    rev = "b259ef799b5ac014604da71ecd92d4a52603ed2d";
+    hash = "sha256-H7KGGJUU9BcDNnfXiATBGgs6FJKWQdfftNJS+/v2aMU=";
   });
   rust-overlay = (import "${rust-overlay-src}/flake.nix").outputs {
     self = rust-overlay;