diff --git a/repos.json.lock b/repos.json.lock
index e3e225f40..8cfc6b25d 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -26,8 +26,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "fda7773bf4d01e171e0fff228502ae1099bd2220",
-            "sha256": "0iqylih8y74rcr9azc9jyqfirks022w4znh0jz7d2cg6h9kwawmd",
+            "rev": "aa8b8a84478a74d7aecde9ee8b8fde5a08a5e1a0",
+            "sha256": "03vxj8drfhlpbkkcrd7fsk5wnx0km6id59cwgny4ddi6ny9cy983",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {