diff --git a/svc/scanner.ts b/svc/scanner.ts
index 486eea8dc..17490bfe0 100755
--- a/svc/scanner.ts
+++ b/svc/scanner.ts
@@ -45,7 +45,10 @@ async function scanApi(seqNum: number) {
       nextSeqNum = resp[resp.length - 1].match_seq_num + 1;
       console.log('next_seq_num: %s', nextSeqNum);
     }
-    await redis.set('match_seq_num', nextSeqNum);
+    if (!Number(config.SCANNER_OFFSET)) {
+      // Only set match seq num on primary
+      await redis.set('match_seq_num', nextSeqNum);
+    }
     // We might want to store this in pg eventually for consistency
     // await db.raw('INSERT INTO last_seq_num(match_seq_num) VALUES (?)', [nextSeqNum]);
     // If not a full page, delay the next iteration