diff --git a/backend/src/services/tautulli.ts b/backend/src/services/tautulli.ts
index 0cb5c28..ea723a8 100644
--- a/backend/src/services/tautulli.ts
+++ b/backend/src/services/tautulli.ts
@@ -28,12 +28,13 @@ export async function backfillUserHistory(user: {
 			d.setDate(d.getDate() - 30);
 			return d.toISOString().split("T")[0];
 		})();
+		const afterTimestamp = Math.floor(new Date(startDate).getTime() / 1000);
 		const historyResponse = await axios.get(`${TAUTULLI_URL}/api/v2`, {
 			params: {
 				apikey: TAUTULLI_API_KEY,
 				cmd: "get_history",
 				user_id: tautulliUser.user_id,
-				start_date: startDate,
+				after: afterTimestamp,
 				length: 1000,
 			},
 		});