diff --git a/schemas/videoasset.yaml b/schemas/videoasset.yaml
index 84ac542..72dfcbd 100644
--- a/schemas/videoasset.yaml
+++ b/schemas/videoasset.yaml
@@ -40,16 +40,6 @@
           type: string
           minLength: 1
           example: https://s3-ap-northeast-1.amazonaws.com/my-bucket/input-image.jpg
-        seed:
-          deprecated: true
-          description: >-
-            **Deprecated — use `inputSrc`.** Legacy alias for the image-to-video
-            input image URL, accepted and normalised to `inputSrc` on ingest. The
-            name is misleading — industry-wide `seed` means an integer RNG sampling
-            seed — and will be removed in a future major version.
-          type: string
-          minLength: 1
-          example: https://s3-ap-northeast-1.amazonaws.com/my-bucket/seed-image.jpg
         model:
           description: >-
             The generation model to use when `prompt` is set (e.g. `luma-ray-3`,
diff --git a/tests/smoke.cjs b/tests/smoke.cjs
index fc36af3..968a9ee 100644
--- a/tests/smoke.cjs
+++ b/tests/smoke.cjs
@@ -218,13 +218,14 @@ async function run() {
     assert.strictEqual(result.model, "luma-ray-3");
   });
 
-  check("Parse videoAsset with deprecated seed alias (still accepted for back-compat)", () => {
-    const result = zodCjs.videoAssetSchema.parse({
-      type: "video",
-      prompt: "Camera pans right",
-      seed: "https://example.com/seed.jpg",
-    });
-    assert.strictEqual(result.seed, "https://example.com/seed.jpg");
+  check("REJECT videoAsset with removed `seed` field (use inputSrc instead)", () => {
+    assert.throws(() =>
+      zodCjs.videoAssetSchema.parse({
+        type: "video",
+        prompt: "Camera pans right",
+        seed: "https://example.com/seed.jpg",
+      })
+    );
   });
 
   check("Parse audioAsset with prompt + voice", () => {
@@ -321,7 +322,7 @@ async function run() {
     );
   });
 
-  check("REJECT video with deprecated seed but no src and no prompt (alias is a modifier)", () => {
+  check("REJECT video with removed `seed` field and no src/prompt (seed no longer recognized)", () => {
     assert.throws(() =>
       zodCjs.videoAssetSchema.parse({ type: "video", seed: "https://example.com/seed.jpg" })
     );