diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ba799c..b82fbd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+In Development
+--------------
+
+* Update to Roundcube 1.3.7.
+
 v0.28 (July 30, 2018)
 ---------------------
 
diff --git a/setup/webmail.sh b/setup/webmail.sh
index 971944e..38aee94 100755
--- a/setup/webmail.sh
+++ b/setup/webmail.sh
@@ -35,8 +35,8 @@ 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 # Install Roundcube from source if it is not already present or if it is out of date.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=1.3.6
-HASH=ece5cfc9c7af0cbe90c0065ef33e85ed42991830
+VERSION=1.3.7
+HASH=df0e29d09aae0b7a7ae98023dcd1ae3c6be77cd0
 PERSISTENT_LOGIN_VERSION=dc5ca3d3f4415cc41edb2fde533c8a8628a94c76
 HTML5_NOTIFIER_VERSION=4b370e3cd60dabd2f428a26f45b677ad1b7118d5
 CARDDAV_VERSION=2.0.4