diff --git a/etesync_dav/radicale/storage.py b/etesync_dav/radicale/storage.py
index d6312b1..8d4b0e1 100644
--- a/etesync_dav/radicale/storage.py
+++ b/etesync_dav/radicale/storage.py
@@ -22,6 +22,8 @@ from contextlib import contextmanager
 
 import etesync as api
 import vobject
+import radicale
+from packaging.version import Version
 from radicale import pathutils
 from radicale.item import Item, get_etag
 from radicale.storage import (
@@ -421,7 +423,10 @@ class Collection(BaseCollection):
             href_mapper = HrefMapper(content=etesync_item._cache_obj, href=href)
             href_mapper.save(force_insert=True)
 
-        return self._get(href)
+        uploaded = self._get(href)
+        if Version(radicale.VERSION) >= Version("3.5.5"):
+            return (uploaded, item)
+        return uploaded
 
     def delete(self, href=None):
         """Delete an item.
diff --git a/etesync_dav/radicale/storage_etebase_collection.py b/etesync_dav/radicale/storage_etebase_collection.py
index 1ccc6dd..0f68561 100644
--- a/etesync_dav/radicale/storage_etebase_collection.py
+++ b/etesync_dav/radicale/storage_etebase_collection.py
@@ -1,6 +1,8 @@
 import re
 
 import vobject
+import radicale
+from packaging.version import Version
 from radicale import pathutils
 from radicale.item import Item
 from radicale.storage import (
@@ -294,7 +296,10 @@ class Collection(BaseCollection):
             href_mapper = HrefMapper(content=etesync_item.cache_item, href=href)
             href_mapper.save(force_insert=True)
 
-        return self._get(href)
+        uploaded = self._get(href)
+        if Version(radicale.VERSION) >= Version("3.5.5"):
+            return (uploaded, item)
+        return uploaded
 
     def delete(self, href=None):
         """Delete an item.
diff --git a/etesync_dav/radicale/web.py b/etesync_dav/radicale/web.py
index 869624f..ff335a7 100644
--- a/etesync_dav/radicale/web.py
+++ b/etesync_dav/radicale/web.py
@@ -12,6 +12,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
+import radicale
+from packaging.version import Version
 from radicale import web
 
 from etesync_dav.mac_helpers import has_ssl
@@ -31,8 +33,10 @@ class Web(web.BaseWeb):
             environ["wsgi.url_scheme"] = "https"
         body = list(app(environ, start_response))[0]
         ret_response.append(body)
+        if Version(radicale.VERSION) >= Version("3.5.10"):
+            ret_response.append(None)  # xml_request field
         return tuple(ret_response)
 
-    def get(self, environ, base_prefix, path, user):
+    def get(self, environ, base_prefix, path, user, *args, **kwargs):
         return self._call(environ, base_prefix, path, user)
 
-    def post(self, environ, base_prefix, path, user):
+    def post(self, environ, base_prefix, path, user, *args, **kwargs):
         return self._call(environ, base_prefix, path, user)
diff --git a/etesync_dav/radicale_main/server.py b/etesync_dav/radicale_main/server.py
index b593661..a258f7d 100644
--- a/etesync_dav/radicale_main/server.py
+++ b/etesync_dav/radicale_main/server.py
@@ -53,12 +53,12 @@ elif os.name == "nt":
 
 
 class MyApplication(Application):
-    def do_POST(self, environ, base_prefix, path, user):
+    def do_POST(self, environ, base_prefix, path, user, *args, **kwargs):
         """Manage POST request."""
         # Dispatch .web URL to web module
         if path == "/.web" or path.startswith("/.web/"):
-            return self._web.post(environ, base_prefix, path, user)
+            return self._web.post(environ, base_prefix, path, user, *args, **kwargs)
 
-        return super().do_POST(environ, base_prefix, path, user)
+        return super().do_POST(environ, base_prefix, path, user, *args, **kwargs)
 
 
 def format_address(address):