diff --git a/repos.json.lock b/repos.json.lock
index c76a0364e..6e96d0c9c 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -26,8 +26,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "aa8b8a84478a74d7aecde9ee8b8fde5a08a5e1a0",
-            "sha256": "03vxj8drfhlpbkkcrd7fsk5wnx0km6id59cwgny4ddi6ny9cy983",
+            "rev": "68949988e7c3fd0d67c116cbe1e8c1d67d6fe1b0",
+            "sha256": "1khlpn3ns8a8sy731fq6sfaqlx41hzxgnnqaivh01y3nzwbbdxwr",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {