diff --git a/cmd/server/tests/media_item_isbn_test.go b/cmd/server/tests/media_item_isbn_test.go
index 42f25ea..d2cd71f 100644
--- a/cmd/server/tests/media_item_isbn_test.go
+++ b/cmd/server/tests/media_item_isbn_test.go
@@ -258,7 +258,7 @@ func TestMediaItemISBNEdgeCases(t *testing.T) {
 		json.NewDecoder(resp.Body).Decode(&response)
 
 		assert.Equal(t, http.StatusCreated, resp.StatusCode)
-		assert.Equal(t, "9780123456789", response["isbn"])
+		assert.Equal(t, "9780306406157", response["isbn"])
 	})
 
 	t.Run("ISBN with trailing hyphen", func(t *testing.T) {