diff --git a/setup/management.sh b/setup/management.sh
index 88b40e26..476abd79 100755
--- a/setup/management.sh
+++ b/setup/management.sh
@@ -3,7 +3,7 @@
 source setup/functions.sh
 
 apt_install python3-flask links duplicity libyaml-dev python3-dnspython python3-dateutil
-hide_output pip3 install rtyaml "email_validator==0.1.0-rc1"
+hide_output pip3 install rtyaml "email_validator==0.1.0-rc4"
 
 # Create a backup directory and a random key for encrypting backups.
 mkdir -p $STORAGE_ROOT/backup