diff --git a/playbook/merge_pet_online-review.yml b/playbook/merge_pet_online-review.yml
index df77b1d..72a39c9 100644
--- a/playbook/merge_pet_online-review.yml
+++ b/playbook/merge_pet_online-review.yml
@@ -26,6 +26,9 @@
       delegate_to: localhost
       run_once: true
 
+    - name: remove old backup
+      shell: rm -rf "{{goleaf_dest}}"/main.bak
+      ignore_errors: yes
     - name: backup goleaf
       shell: mv "{{goleaf_dest}}"/main "{{goleaf_dest}}"/main.bak
       ignore_errors: yes
diff --git a/playbook/merge_pet_online.yml b/playbook/merge_pet_online.yml
index 490943d..ec0bd33 100644
--- a/playbook/merge_pet_online.yml
+++ b/playbook/merge_pet_online.yml
@@ -26,6 +26,9 @@
       delegate_to: localhost
       run_once: true
 
+    - name: remove old backup
+      shell: rm -rf "{{goleaf_dest}}"/main.bak
+      ignore_errors: yes
     - name: backup goleaf
       shell: mv "{{goleaf_dest}}"/main "{{goleaf_dest}}"/main.bak
       ignore_errors: yes