diff --git a/repos.json.lock b/repos.json.lock
index 8d322be27..d64a5d7a6 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -46,8 +46,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "568ab584d1163b11a461af8928380ed80f769887",
-            "sha256": "0dqprzw3mihyvv93zv63mccjwf0ymm5qap0kdcv04np9lcbvxifm",
+            "rev": "f2834881e0103a254fdf1bb7e3d247f928f4cbaa",
+            "sha256": "1qqyck38waw7f4rdahjd2wr2w1sn79qdivlhd3p391yak06wj037",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "artturin": {