diff --git a/repos.json.lock b/repos.json.lock
index f6135ee44..b31688834 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -76,8 +76,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "1657b47fb5f6b5d8295d4dbe106a33c9d834b645",
-            "sha256": "0k0y8p57gsnq8hja36z2mqnxpmla11xmddsiv7y96ihhakykzjcv",
+            "rev": "f74a69f7a4d3323a20a4ce15a6c3f9f2565c3541",
+            "sha256": "1fjhip6l2z5fq5b0nmc0j4ccnqj35qznv9q1rvjlpaw1hkcw5rwp",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "artturin": {