diff --git a/repos.json.lock b/repos.json.lock
index b323e5ea1..912f6bc65 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -56,8 +56,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "b67836f7bd981f8de96fd6011f7ec31075d4a20d",
-            "sha256": "0d1ih6c95v1jx1gd3l7x8rf1dbjiwnvqm7z0r6pnyckqvf6n25ap",
+            "rev": "64dabb11ad75872bf74072d321839b4c1ae1f47e",
+            "sha256": "1xs5rb6s4zyzlygvsszpir8isg3n5s5qyv1j3pp1knjpgwcc6sr6",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "artturin": {