diff --git a/pkgs/development/libraries/libuv/default.nix b/pkgs/development/libraries/libuv/default.nix
index effbb9ac742..78abbe7392c 100644
--- a/pkgs/development/libraries/libuv/default.nix
+++ b/pkgs/development/libraries/libuv/default.nix
@@ -18,6 +18,7 @@ stdenv.mkDerivation rec {
       "getaddrinfo_fail" "getaddrinfo_fail_sync"
       "threadpool_multiple_event_loops" # times out on slow machines
       "get_passwd" # passed on NixOS but failed on other Linuxes
+      "tcp_writealot" # times out sometimes
     ] ++ stdenv.lib.optionals stdenv.isDarwin [
         # Sometimes: timeout (no output), failed uv_listen. Someone
         # should report these failures to libuv team. There tests should