diff --git a/CHANGELOG b/CHANGELOG
index 872eb4d..468974c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -9,6 +9,8 @@ Version 2.0
    now equivalent to “/mode +o Toto”
  - Fix the reconnection to the XMPP server to try every 2 seconds
    instead of immediately. This avoid hogging resources for nothing
+ - Asynchronously resolve domain names by optionally using the DNS
+   library c-ares.
 
 Version 1.1                                             2014-16-07
 
diff --git a/INSTALL b/INSTALL
index c5fb50f..09a1590 100644
--- a/INSTALL
+++ b/INSTALL
@@ -37,6 +37,12 @@ Libraries:
  not provided.
  http://www.gnu.org/software/libidn/
 
+- c-ares (optional, but recommended)
+ Asynchronously resolve domain names. This offers better reactivity and
+ performances when connecting to a big number of IRC servers at the same
+ time.
+ http://c-ares.haxx.se/
+
 - libbotan 1.11 (optional)
  Provides TLS support. Without it, IRC connections are all made in
  plain-text mode.