diff --git a/main.py b/main.py
index 7bda776..9191031 100644
--- a/main.py
+++ b/main.py
@@ -111,20 +111,23 @@ def parse(plugin: AddonInfo, **kwargs):
             }
             xpi_filename = f'{plugin.owner}#{plugin.repository}+{release.tagName}@{release_asset["id"]}.xpi'
             details = None
+            priority_sources = ['rdf', 'json']
+            if release.targetZoteroVersion == '6':
+                priority_sources = ['json', 'rdf']
             try:
                 xpi_filepath = download_xpi(xpi_url=xpi_url,
                                             download_dir=kwargs.get('runtime_xpi_directory'),
                                             unique_name=xpi_filename,
                                             force_download=False,
                                             cache_dir=kwargs.get('cache_directory'))
-                details = addon_details(xpi_filepath)
+                details = addon_details(xpi_filepath, priority_sources=priority_sources)
             except:
                 try:
                     xpi_filepath = download_xpi(xpi_url=xpi_url,
                                                 download_dir=kwargs.get('runtime_xpi_directory'),
                                                 unique_name=xpi_filename,
                                                 force_download=True)
-                    details = addon_details(xpi_filepath)
+                    details = addon_details(xpi_filepath, priority_sources=priority_sources)
                 except Exception as e:
                     print(f'fetch addon detail of {plugin.repo} with {xpi_url} failed: {e}')
 
diff --git a/moz_addons.py b/moz_addons.py
index 4339d64..749ec49 100644
--- a/moz_addons.py
+++ b/moz_addons.py
@@ -67,7 +67,8 @@ class XpiDetail:
     def check_compatible_for_zotero_version(self, version: str | int):
         if isinstance(version, int):
             version = str(version) + '.*'
-        if (min_version := self.min_version.replace('*', '0')) and (max_version := self.max_version.replace('*', '999')):
+        if (min_version := self.min_version.replace('*', '0')) and (
+        max_version := self.max_version.replace('*', '999')):
             return (compare_versions(min_version, version.replace('*', '999')) <= 0
                     <= compare_versions(max_version, version.replace('*', '0')))
 
@@ -203,6 +204,7 @@ def detail_from_manifest_rdf(manifest):
                         result.update({entry: get_text(child_node)})
             except:
                 return
+
         extract_info(description, details)
         if not details.get('id') or (details.get('id').startswith("__") and details.get('id').endswith("__")):
             return
@@ -226,7 +228,6 @@ def detail_from_manifest_rdf(manifest):
                 else:
                     details['max_version'] = max_version
 
-
         for targetApplication in description.getElementsByTagName(em + "targetApplication"):
             version_info = {'id': None, 'minVersion': None, 'maxVersion': None}
             extract_info(targetApplication, version_info)
@@ -242,14 +243,19 @@ def detail_from_manifest_rdf(manifest):
         raise e
 
 
-def addon_details(addon_path) -> XpiDetail:
+def addon_details(addon_path, priority_sources=None) -> XpiDetail:
+    if priority_sources is None:
+        priority_sources = ['json', 'rdf']
     if not os.path.exists(addon_path):
         raise IOError(f"Add-on path does not exist: {addon_path}")
     xpi_detail = XpiDetail()
-    if ((manifest := manifest_from_json(addon_path)) and
-            (details := detail_from_manifest_json(addon_path, manifest))):
-        xpi_detail._append_info(details)
-    if ((manifest := manifest_from_rdf(addon_path)) and
-            (details := detail_from_manifest_rdf(manifest))):
-        xpi_detail._append_info(details)
+    for source in priority_sources:
+        if source == 'json':
+            if ((manifest := manifest_from_json(addon_path)) and
+                    (details := detail_from_manifest_json(addon_path, manifest))):
+                xpi_detail._append_info(details)
+        if source == 'rdf':
+            if ((manifest := manifest_from_rdf(addon_path)) and
+                    (details := detail_from_manifest_rdf(manifest))):
+                xpi_detail._append_info(details)
     return xpi_detail