diff --git a/repos.json.lock b/repos.json.lock
index 1296f182b..8bf69ddc8 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -21,8 +21,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "9c1f2a9effbcbf747d3a4b50b589aeccd21f3743",
-            "sha256": "0yf3kh80ykkykdll0wydj2sagl2g53wk0micwl6jryjlvzdgsjxh",
+            "rev": "96b4f5881810ebbdae071f50c0f78a60c4fb54bc",
+            "sha256": "1ychi5rksz6q2ckz9fwb3p57qch07606ykbrzg3sp236s8l2f4ip",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {