diff --git a/charts/csi-wekafsplugin/values.yaml b/charts/csi-wekafsplugin/values.yaml
index dfe4244e6..79ea0591c 100644
--- a/charts/csi-wekafsplugin/values.yaml
+++ b/charts/csi-wekafsplugin/values.yaml
@@ -50,7 +50,7 @@ controller:
   # -- maximum concurrent operations per operation type
   concurrency:
     createVolume: 5
-    deleteVolume: 1
+    deleteVolume: 5
     expandVolume: 5
     createSnapshot: 5
     deleteSnapshot: 5