diff --git a/repos.json.lock b/repos.json.lock
index 9411efad8..8d3b5294c 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -16,8 +16,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "eb78df76c50962107276657112558d1a83297fca",
-            "sha256": "1jjzhsw2imxgmx9caa53nz1b56s0zda6sp30hqv11agia9qbx0z0",
+            "rev": "3e6031ad0b23b6e3112fa6c95b04b6c671272609",
+            "sha256": "168qix7npsr0n8q6x3cbjgfp4wy7zic6xj70dxa4aq48gncmjw2h",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {