diff --git a/repos.json.lock b/repos.json.lock
index 0fb6ddf66..f2e31e7da 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -56,8 +56,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "ba4b51daad50b50d53db61f56f4e6380511ed1cd",
-            "sha256": "0dll56lfi64zvzlg9hki03d1mmfn5xxffrci2ik3slfvpcs3cpd8",
+            "rev": "b67836f7bd981f8de96fd6011f7ec31075d4a20d",
+            "sha256": "0d1ih6c95v1jx1gd3l7x8rf1dbjiwnvqm7z0r6pnyckqvf6n25ap",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "artturin": {