diff --git a/repos.json.lock b/repos.json.lock
index 685da5113..781a9dc46 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -26,8 +26,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "b3574626fd2663aff73512fe074365036ae3d315",
-            "sha256": "042s8xiz4p2sl3xqzy81xsc6z1szbx4a9zwxc146i89ggckk1vx0",
+            "rev": "3d98deb51b6f65c37098f0b8a7785ff9b242d82f",
+            "sha256": "0h9f3p3j5jzagg39c7bi7q9sbjk1m38i232j3zljdy2kbclv6kmf",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {