diff --git a/ansible/roles/tsg-os-provision/tasks/main.yml b/ansible/roles/tsg-os-provision/tasks/main.yml
index 6e40bf57..b53c04b9 100644
--- a/ansible/roles/tsg-os-provision/tasks/main.yml
+++ b/ansible/roles/tsg-os-provision/tasks/main.yml
@@ -171,4 +171,11 @@
     path: /etc/sudoers
     backrefs: yes
     regexp: "^(.*Defaults    secure_path =.*)$"
-    line: '\1:/opt/tsg/tsg-os-provision'
\ No newline at end of file
+    line: '\1:/opt/tsg/tsg-os-provision'
+
+- name: 'change ansible hash_behaviour value replace to merge'
+  lineinfile:
+    path: /etc/ansible/ansible.cfg
+    backrefs: yes
+    regexp: "^(.*#hash_behaviour = replace.*)$"
+    line: '\1\nhash_behaviour = merge'
\ No newline at end of file