diff --git a/oneshot/upgrade-pvc-cluster_deb12.yml b/oneshot/upgrade-pvc-cluster_deb12.yml
index 2385bc0..09d60b3 100644
--- a/oneshot/upgrade-pvc-cluster_deb12.yml
+++ b/oneshot/upgrade-pvc-cluster_deb12.yml
@@ -384,6 +384,12 @@
         - name: disable insecure global id reclaim in Ceph
           command: ceph config set mon auth_allow_insecure_global_id_reclaim false
 
+        - name: disable default pg autoscaler
+          command: ceph config set global osd_pool_default_pg_autoscale_mode off
+
+        - name: disable pg autoscaler
+          command: ceph osd pool set noautoscale
+
         - name: set OSDs to require pacific
           command: ceph osd require-osd-release pacific