diff --git a/cluster/apps/monitoring/thanos/helm-release.yaml b/cluster/apps/monitoring/thanos/helm-release.yaml
index 72478bffb..9ad4793d4 100644
--- a/cluster/apps/monitoring/thanos/helm-release.yaml
+++ b/cluster/apps/monitoring/thanos/helm-release.yaml
@@ -39,6 +39,8 @@ spec:
       enabled: true
     compactor:
       enabled: true
+      persistence:
+        size: 50Gi
     storegateway:
       enabled: true
     ruler: