diff --git a/setup/webmail.sh b/setup/webmail.sh
index 2a625366..ba745865 100755
--- a/setup/webmail.sh
+++ b/setup/webmail.sh
@@ -36,8 +36,8 @@ apt-get purge -qq -y roundcube* #NODOC
 # Install Roundcube from source if it is not already present or if it is out of date.
 # Combine the Roundcube version number with the commit hash of plugins to track
 # whether we have the latest version of everything.
-VERSION=1.3.1
-HASH=d680f2914a0bff5314d8dda618d55937a13d1c5f
+VERSION=1.3.3
+HASH=903a4eb1bfc25e9a08d782a7f98502cddfa579de
 PERSISTENT_LOGIN_VERSION=dc5ca3d3f4415cc41edb2fde533c8a8628a94c76
 HTML5_NOTIFIER_VERSION=4b370e3cd60dabd2f428a26f45b677ad1b7118d5
 CARDDAV_VERSION=2.0.4