diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7d548f..4c1de5f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,13 +1,21 @@
 CHANGELOG
 =========
 
+In Development
+--------------
+
+Software updates:
+
+* Upgraded Roundcube to version 1.4.11 addressing a security issue, and its desktop notifications plugin.
+* Upgraded Z-Push (for Exchange/ActiveSync) to version 2.6.2.
+
 v0.52 (January 31, 2021)
 ------------------------
 
 Software updates:
 
 * Upgraded Roundcube to version 1.4.10.
-* Upgraded zpush to 2.6.1.
+* Upgraded Z-Push to 2.6.1.
 
 Mail:
 
diff --git a/setup/webmail.sh b/setup/webmail.sh
index de4ca52..912bd5e 100755
--- a/setup/webmail.sh
+++ b/setup/webmail.sh
@@ -28,10 +28,11 @@ apt_install \
 # Install Roundcube from source if it is not already present or if it is out of date.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=1.4.10
-HASH=36b2351030e1ebddb8e39190d7b0ba82b1bbec1b
-PERSISTENT_LOGIN_VERSION=6b3fc450cae23ccb2f393d0ef67aa319e877e435
-HTML5_NOTIFIER_VERSION=4b370e3cd60dabd2f428a26f45b677ad1b7118d5
+
+VERSION=1.4.11
+HASH=3877f0e70f29e7d0612155632e48c3db1e626be3
+PERSISTENT_LOGIN_VERSION=6b3fc450cae23ccb2f393d0ef67aa319e877e435 # version 5.2.0
+HTML5_NOTIFIER_VERSION=68d9ca194212e15b3c7225eb6085dbcf02fd13d7 # version 0.6.4+
 CARDDAV_VERSION=3.0.3
 CARDDAV_HASH=d1e3b0d851ffa2c6bd42bf0c04f70d0e1d0d78f8