diff --git a/TODO.md b/TODO.md
index 6f04a76..50b9bca 100644
--- a/TODO.md
+++ b/TODO.md
@@ -17,13 +17,20 @@
   * cargo-deny
 
 * aquatic_udp
+  * uring
+    * ValidUntil periodic update
+    * statistics
+    * ipv6_only
+    * shared config keys such as poll interval
+  * mio
+    * stagger connection cleaning intervals?
+    * ipv4-mapped addresses
+    * ipv6_only
   * glommio
     * consider sending local responses immediately
     * consider adding ConnectedScrapeRequest::Scrape(PendingScrapeRequest)
       containing TransactionId and BTreeMap<usize, InfoHash>, and same for
       response
-  * mio
-    * stagger connection cleaning intervals?
 
 * aquatic_http:
   * clean out connections regularly