diff --git a/repos.json.lock b/repos.json.lock
index 8d1121e63..c38b9ccf5 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -16,8 +16,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "5c24f3704d32a0dd7c4e75f43ddb3ae17f63cd12",
-            "sha256": "1m2q6wns45sdkcbi1ln67h7imi4jvnkpqy4v1ai2pgdc41v0pmpk",
+            "rev": "c1675efc5d155df06abde6a9f3b05a3a5a4168b0",
+            "sha256": "05cj2lhl4hzlw907m0p3ksixnirmxwv84874vjk6gzv6myxs779i",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {