diff --git a/repos.json.lock b/repos.json.lock
index 9f03a1416..24d942231 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -16,8 +16,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "e53b7e184a201b3b9ce81f0c05a7bc7acb643762",
-            "sha256": "0dhw16v4xz46ma3c50g9mfms928l3dx307y6w1ihczs4cg8z9v4g",
+            "rev": "ef76355f6d59e2c1652d2f3eff6bfd3a2e91a4a2",
+            "sha256": "1idywc9ilqic9ip4q1dl1f5yrm2vrx2ilyhwjs675d33si6kazdr",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {