diff --git a/packages/kontinuous/tests/__snapshots__/extends-ovh.prod.yaml b/packages/kontinuous/tests/__snapshots__/extends-ovh.prod.yaml
index 6430eed5d3..4d8e82f9d8 100644
--- a/packages/kontinuous/tests/__snapshots__/extends-ovh.prod.yaml
+++ b/packages/kontinuous/tests/__snapshots__/extends-ovh.prod.yaml
@@ -746,6 +746,8 @@ spec:
         secretAccessKey:
           key: bucket_secret_key
           name: fabrique-prod-backups-access-key
+      wal:
+        compression: gzip
   minSyncReplicas: 0
   maxSyncReplicas: 0
   postgresql: {}
@@ -824,6 +826,8 @@ spec:
         secretAccessKey:
           key: bucket_secret_key
           name: fabrique-prod-backups-access-key
+      wal:
+        compression: gzip
   minSyncReplicas: 0
   maxSyncReplicas: 0
   postgresql: {}
diff --git a/packages/kontinuous/tests/__snapshots__/override-env-default.dev.yaml b/packages/kontinuous/tests/__snapshots__/override-env-default.dev.yaml
index 01ad62bef6..ddc60a19f5 100644
--- a/packages/kontinuous/tests/__snapshots__/override-env-default.dev.yaml
+++ b/packages/kontinuous/tests/__snapshots__/override-env-default.dev.yaml
@@ -353,6 +353,8 @@ spec:
         secretAccessKey:
           key: bucket_secret_key
           name: fabrique-dev-backups-access-key
+      wal:
+        compression: gzip
   minSyncReplicas: 0
   maxSyncReplicas: 0
   postgresql: {}
diff --git a/packages/kontinuous/tests/__snapshots__/pg.prod.yaml b/packages/kontinuous/tests/__snapshots__/pg.prod.yaml
index 3d89b0305b..cc2e55a268 100644
--- a/packages/kontinuous/tests/__snapshots__/pg.prod.yaml
+++ b/packages/kontinuous/tests/__snapshots__/pg.prod.yaml
@@ -517,6 +517,8 @@ spec:
         secretAccessKey:
           key: bucket_secret_key
           name: fabrique-prod-backups-access-key
+      wal:
+        compression: gzip
   minSyncReplicas: 0
   maxSyncReplicas: 0
   postgresql: {}
diff --git a/plugins/fabrique/charts/pg/values.yaml b/plugins/fabrique/charts/pg/values.yaml
index 92ac7181dc..ad5200a72b 100644
--- a/plugins/fabrique/charts/pg/values.yaml
+++ b/plugins/fabrique/charts/pg/values.yaml
@@ -50,6 +50,8 @@ cnpg-cluster:
     barmanObjectStore:
       ~tpl~destinationPath: "s3://{{ .Values.global.projectName }}-{{ .Values.global.isProd | ternary `prod` `dev` }}-backups/{{ .Values.global.namespace }}/{{ index .Values.kontinuous.chartContext 2 }}{{ (ne .Values.Parent.backup.name ``) | ternary (print `-` .Values.Parent.backup.name) `` }}"
       ~tpl~endpointURL: "{{ .Values.global.pgBackupEndpointURL }}"
+      wal:
+        compression: gzip
       s3Credentials:
         accessKeyId:
           ~tpl~name: "{{ .Values.global.projectName }}-{{ .Values.global.isProd | ternary `prod` `dev` }}-backups-access-key"