diff --git a/roles/xmpp_server/tasks/main.yml b/roles/xmpp_server/tasks/main.yml
index d53bc30f3cd9ed8c3e492881a8da5673eb77a3b1..dcedd1dfe4f1a831d832aaf1e6883cc2e78130a7 100644
--- a/roles/xmpp_server/tasks/main.yml
+++ b/roles/xmpp_server/tasks/main.yml
@@ -57,6 +57,16 @@
   notify:
     - Restart Prosody
 
+- name: Generate the XMPP server Diffie-Helman parameter
+  openssl_dhparam:
+    owner: root
+    group: prosody
+    mode: 0640
+    path: "/etc/ssl/private/{{ ansible_fqdn }}_xmpp.dh.pem"
+    size: 2048
+  notify:
+    - Restart Prosody
+
 - name: Deploy configuration file for checking certificate validity via cron
   copy:
     content: "/etc/ssl/certs/{{ ansible_fqdn }}_xmpp.pem"