diff --git a/infrastructure/prometheus-stack/helm-release.yaml b/infrastructure/prometheus-stack/helm-release.yaml
index 3c9e4ba..0eb8e4f 100644
--- a/infrastructure/prometheus-stack/helm-release.yaml
+++ b/infrastructure/prometheus-stack/helm-release.yaml
@@ -37,4 +37,4 @@ spec:
               storageClassName: "csi-cinder-classic"
               resources:
                 requests:
-                  storage: 20Gi
+                  storage: 40Gi