diff --git a/apt_mirror_updater/__init__.py b/apt_mirror_updater/__init__.py
index ba21bee..44a42d7 100644
--- a/apt_mirror_updater/__init__.py
+++ b/apt_mirror_updater/__init__.py
@@ -938,7 +938,7 @@ def find_current_mirror(sources_list):
         tokens = line.split()
         if (len(tokens) >= 4 and
                 tokens[0] in ('deb', 'deb-src') and
-                tokens[1].startswith(('http://', 'ftp://')) and
+                tokens[1].startswith(('http://', 'https://', 'ftp://', 'mirror://')) and
                 'main' in tokens[3:]):
             return tokens[1]
     raise EnvironmentError("Failed to determine current mirror in apt's package resource list!")
diff --git a/apt_mirror_updater/backends/elementary.py b/apt_mirror_updater/backends/elementary.py
index d0bbb6b..d5b7c51 100644
--- a/apt_mirror_updater/backends/elementary.py
+++ b/apt_mirror_updater/backends/elementary.py
@@ -109,6 +109,17 @@
         series='hera',
         version=decimal.Decimal('5.1'),
     ),
+    Release(
+        codename='Odin',
+        created_date=datetime.date(2021, 8, 10),
+        distributor_id='elementary',
+        upstream_distributor_id='ubuntu',
+        upstream_series='focal',
+        upstream_version=decimal.Decimal('20.04'),
+        is_lts=False,
+        series='odin',
+        version=decimal.Decimal('6.0'),
+    ),
 ]
 """
 List of :class:`.Release` objects corresponding to known elementary OS