diff --git a/repos.json.lock b/repos.json.lock
index 2b9393f5d..f832031af 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -36,8 +36,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "c08a6568f66d20f231c4c235bdf712039a1e745b",
-            "sha256": "1xn8p9ah8llp0a66nz6hwnx9hyyimwc0rhyfsh8kgvn2p6nb399y",
+            "rev": "f7047ebaedb508fe84303d77e5e9b8ca9173b348",
+            "sha256": "1c0bn1436n04724926f6qms9a1qr2jwga7dh6zyvmmjp7qk4559x",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {