diff --git a/repos.json.lock b/repos.json.lock
index ed07ea50c..57a8c0730 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -26,8 +26,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "80d60967ebf3ca57cedfd524c5c0ade4efbdf79f",
-            "sha256": "1q8girs58xpnmcilwzi51dss335r582ik9p9hsr8ibx8rhs132vz",
+            "rev": "692466a7f316e69715a0298643ddf75d2157d8d9",
+            "sha256": "0jm71p6cnn8f0fdmmi46gmgr0fm5i050zlwz4xggwj8bhf13crpw",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {