diff --git a/humblebundle_downloader/download_library.py b/humblebundle_downloader/download_library.py
index 8f95a11..6d3eb47 100644
--- a/humblebundle_downloader/download_library.py
+++ b/humblebundle_downloader/download_library.py
@@ -114,8 +114,8 @@ class DownloadLibrary:
 
             cache_file_key = 'trove:{name}'.format(name=web_name)
             file_info = {
-                'uploaded_at': download.get('uploaded_at'),
-                'md5': download.get('md5'),
+                'uploaded_at': download.get('uploaded_at') or download.get('timestamp') or product.get('date_added', '0'),
+                'md5': download.get('md5', 'UNKNOWN_MD5'),
             }
             cache_file_info = self.cache_data.get(cache_file_key, {})