diff --git a/crates/ptth_kv/src/main.rs b/crates/ptth_kv/src/main.rs
index 9c75e94..1e4f0b2 100644
--- a/crates/ptth_kv/src/main.rs
+++ b/crates/ptth_kv/src/main.rs
@@ -287,6 +287,13 @@ impl StatusValue {
 
 #[tokio::main]
 async fn main () -> Result <(), hyper::Error> {
+	use std::time::Duration;
+	
+	use tokio::{
+		spawn,
+		time::interval,
+	};
+	
 	let service = HttpService::new (Store::new (vec! [
 		(b"key_dir".to_vec (), StatusQuotas {
 			max_keys: 4,
diff --git a/docs/build-artifacts.md b/docs/build-artifacts.md
index 6cc5298..ff219c1 100644
--- a/docs/build-artifacts.md
+++ b/docs/build-artifacts.md
@@ -1,5 +1,8 @@
 # Build artifact log
 
+I'm trying to understand how the different dependencies like Tokio and Hyper
+affect artifact size.
+
 ## 2021-01Jan-03
 
 Git commit 88e7839841ad812f5645a30503955511ac107bdd
@@ -11,7 +14,7 @@ Sizes:
 - ptth_relay gzipped: 3 MB
 - ptth_server gzipped: 5 MB
 
-Git commit ???
+Git commit 3d11d0eea561690cd1ce4e2c9225858b870ec8a5
 
 Sizes: