diff --git a/nix/modules/observability.nix b/nix/modules/observability.nix
index 4e29986..0089a28 100644
--- a/nix/modules/observability.nix
+++ b/nix/modules/observability.nix
@@ -57,7 +57,7 @@ in
             max_shards = 20;
             min_backoff = "30ms";
             max_backoff = "10s";
-            max_retries = 10;
+            # max_retries removed - deprecated in recent Prometheus/NixOS versions
           };
         }
       ];