diff --git a/src/controllers/importController.js b/src/controllers/importController.js
index 4c05cb7..427085b 100644
--- a/src/controllers/importController.js
+++ b/src/controllers/importController.js
@@ -92,6 +92,7 @@ async function importCardsInternal() {
     const cardValues = [], cardParams = [];
     const imageValues = [], imageParams = [];
     const csrValues = [], csrParams = [];
+    const batchImageIds = new Set();
 
     for (const card of batch) {
       const fp = cardFingerprint(card);
@@ -107,7 +108,8 @@ async function importCardsInternal() {
 
       if (Array.isArray(card.card_images)) {
         for (const img of card.card_images) {
-          if (!existingImageIds.has(img.id)) {
+          if (!existingImageIds.has(img.id) && !batchImageIds.has(img.id)) {
+            batchImageIds.add(img.id);
             imageValues.push('(?, ?, ?)');
             imageParams.push(img.id, card.id, img.image_url);
             addedImages++;
@@ -151,6 +153,7 @@ async function importCardsInternal() {
       if (imageValues.length) {
         await conn.execute(`
           INSERT INTO card_images (image_id, card_id, image_url) VALUES ${imageValues.join(', ')}
+          ON DUPLICATE KEY UPDATE image_url = VALUES(image_url)
         `, imageParams);
       }