diff --git a/repos.json.lock b/repos.json.lock
index 3fb21cc61..7eca1c67e 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -96,8 +96,8 @@
             "url": "https://github.com/anthonyroussel/nur-packages"
         },
         "arc": {
-            "rev": "27593a29cd68be8a383830e8a020d32c26148f23",
-            "sha256": "1m84v1615jdsza6641qa4z0l3l4sb731pmkrf1pknjzbal1ik3zs",
+            "rev": "49c9649e0f0f2da3130b3c703a9f50e04a62907c",
+            "sha256": "1f4b1alhn2gs5alaiq591gbaw4cdkgz5gy1wx2mxcw58z3174sax",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "arteneko": {