diff --git a/templates/deployment-sidekiq.yaml b/templates/deployment-sidekiq.yaml
index 1b3042d..ee16d3f 100644
--- a/templates/deployment-sidekiq.yaml
+++ b/templates/deployment-sidekiq.yaml
@@ -122,6 +122,8 @@ spec:
                 name: {{ $context.Values.mastodon.extraEnvFrom }}
             {{- end}}
           env:
+            - name: "DB_POOL"
+              value: {{ (max (int .concurrency) 1) | quote }}
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef: