diff --git a/repos.json.lock b/repos.json.lock
index 81d0237c1..2b3bc4685 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -16,8 +16,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "0768cbe6edb0cb299b84bd56d3fe3ace0c123e65",
-            "sha256": "1ms5pdzssz59v8sc2n6jjwyib2bp3glh77xcb565fhmwxnph5kqi",
+            "rev": "1fec9ee995db0a27a236bcae72ce0d0eb4aec567",
+            "sha256": "015pfyhqcdj5k3v5fmq9rny882lbm6zgqdwriwzvbdpc8909rz7v",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {