diff --git a/repos.json.lock b/repos.json.lock
index 52c5312fa..04013bbb9 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -36,8 +36,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "692466a7f316e69715a0298643ddf75d2157d8d9",
-            "sha256": "0jm71p6cnn8f0fdmmi46gmgr0fm5i050zlwz4xggwj8bhf13crpw",
+            "rev": "452c78612fd51024fb9eb01b0f00aee6a61e4114",
+            "sha256": "0g7yvmmdbwhqk338j9cfvn6m22xi6636q34rkrsaxhnr96kzxmpj",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {