diff --git a/api/src/routes/dot-lookup.ts b/api/src/routes/dot-lookup.ts
index 7ecc6e7..cd5018f 100644
--- a/api/src/routes/dot-lookup.ts
+++ b/api/src/routes/dot-lookup.ts
@@ -100,7 +100,8 @@ router.get("/api/v1/dot/lookup", async (req, res) => {
     // ── Check 2: MCS-150 Biennial Update ──
     {
       const outdated = carrier?.mcs150Outdated === "Y";
-      const mcs150Date = census?.mcs150_parsed || null;
+      const mcs150Raw = census?.mcs150_parsed || null;
+      const mcs150Date = mcs150Raw ? new Date(mcs150Raw).toISOString().split("T")[0] : null;
       const isOverdue = mcs150Date ? new Date(mcs150Date) < twoYearsAgo() : null;
 
       if (outdated || isOverdue) {