diff --git a/ingest-option-quotes.ts b/ingest-option-quotes.ts
index a879027..a081527 100644
--- a/ingest-option-quotes.ts
+++ b/ingest-option-quotes.ts
@@ -8,12 +8,13 @@ dotenv.config();
 
 const env = new Env();
 const POLYGON_API_KEY = env.require("POLYGON_API_KEY");
+const CONCURRENCY = Number.parseInt(env.get("CONCURRENCY", "6"));
 
 const polygon = restClient(POLYGON_API_KEY, "https://api.polygon.io", {
   pagination: true,
 });
 
-const queue = new PQueue({ concurrency: 6 });
+const queue = new PQueue({ concurrency: CONCURRENCY });
 
 function* dateRange(
   startDateStr: string,