diff --git a/repos.json.lock b/repos.json.lock
index c7bbcc212..59d34d4ce 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -36,8 +36,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "a1f7ae534e0cba3e5ec12f0e23935c1a12f8ffe0",
-            "sha256": "1b9r30q28lr4c00bm79y0s947x0x4b46n6idchj2hppxvjsg317r",
+            "rev": "824afa36a052e92fc0cba99c7cde9af7694cb7bd",
+            "sha256": "0y9f6h3pisjw6dx8ljmzk5r1rwnf98d0kkacflcm7swa4s187jsz",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {