diff --git a/repos.json.lock b/repos.json.lock
index d16aae01b..a916af9a2 100644
--- a/repos.json.lock
+++ b/repos.json.lock
@@ -36,8 +36,8 @@
             "url": "https://github.com/angr/nixpkgs"
         },
         "arc": {
-            "rev": "f16be477a6fe0a7320ff1713c39e444ab3ac785f",
-            "sha256": "12gyk231p91lcixdkxld775yvf63n9iawwllbkqm5fdlffj0iwnx",
+            "rev": "a1f7ae534e0cba3e5ec12f0e23935c1a12f8ffe0",
+            "sha256": "1b9r30q28lr4c00bm79y0s947x0x4b46n6idchj2hppxvjsg317r",
             "url": "https://github.com/arcnmx/nixexprs"
         },
         "awl-fcarza": {