diff --git a/playbooks/hosts/communityblog.fedorainfracloud.org.yml b/playbooks/hosts/communityblog.fedorainfracloud.org.yml
index e43992dc17..74a6831d74 100644
--- a/playbooks/hosts/communityblog.fedorainfracloud.org.yml
+++ b/playbooks/hosts/communityblog.fedorainfracloud.org.yml
@@ -36,6 +36,7 @@
     - mariadb
     - mod_ssl
     - php-mcrypt
+    - php-mbstring
     - wget
     - unzip
 
diff --git a/playbooks/hosts/magazine.fedorainfracloud.org.yml b/playbooks/hosts/magazine.fedorainfracloud.org.yml
index 0df16e1494..c62cce080e 100644
--- a/playbooks/hosts/magazine.fedorainfracloud.org.yml
+++ b/playbooks/hosts/magazine.fedorainfracloud.org.yml
@@ -36,6 +36,7 @@
     - mariadb
     - mod_ssl
     - php-mcrypt
+    - php-mbstring
     - wget
     - unzip