diff --git a/repos.json.lock b/repos.json.lock
index 4ec04b98e..e8e45fccd 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -46,8 +46,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "d5db6849309f4df2f94e53a4a4849f3a28c2b4d7",
-            "sha256": "0lrfbnrwwxfwzykmb6m0qghwrxhkjvj5xvkk4aq4rjw847h65x2a",
+            "rev": "788015473ad0089c0716d464b917180c568c3708",
+            "sha256": "1dc711hh28jc4r22fgp96g03z8qarnh2nv5zvs5awniw7h9szg86",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "artturin": {