diff --git a/src/publishers/dlobPublisher.ts b/src/publishers/dlobPublisher.ts
index 694b457..d444350 100644
--- a/src/publishers/dlobPublisher.ts
+++ b/src/publishers/dlobPublisher.ts
@@ -115,7 +115,10 @@ const KILLSWITCH_SLOT_DIFF_THRESHOLD =
 	parseInt(process.env.KILLSWITCH_SLOT_DIFF_THRESHOLD) || 200;
 
 // comma separated list of perp market indexes to load: i.e. 0,1,2,3
-const PERP_MARKETS_TO_LOAD = [0]
+const PERP_MARKETS_TO_LOAD =
+	process.env.PERP_MARKETS_TO_LOAD !== undefined
+		? parsePositiveIntArray(process.env.PERP_MARKETS_TO_LOAD)
+		: undefined;
 
 // comma separated list of spot market indexes to load: i.e. 0,1,2,3
 const SPOT_MARKETS_TO_LOAD =