diff --git a/roles/xmpp_server/molecule/default/prepare.yml b/roles/xmpp_server/molecule/default/prepare.yml
index 55225ac5666f9e9552b645b0510b88ac88137d12..f9487affda50e6c40543cf2df1befaf085015f9b 100644
--- a/roles/xmpp_server/molecule/default/prepare.yml
+++ b/roles/xmpp_server/molecule/default/prepare.yml
@@ -138,6 +138,14 @@
         mode: 0644
         state: present
 
+    - name: Deploy lua-ldap package pin for testing Stretch -> Buster upgrade scenario (no need to pin the package in Buster)
+      copy:
+        src: "lua_ldap_backports_pin"
+        dest: "/etc/apt/preferences.d/lua-ldap"
+        owner: root
+        group: root
+        mode: 0644
+
 - hosts: clients
   become: true
   tasks: