diff --git a/homeassistant/util/dt.py b/homeassistant/util/dt.py
index 09a7923aaa..2dfc9a6f62 100644
--- a/homeassistant/util/dt.py
+++ b/homeassistant/util/dt.py
@@ -24,7 +24,7 @@ EPOCHORDINAL = dt.datetime(1970, 1, 1).toordinal()
 
 # Copyright (c) Django Software Foundation and individual contributors.
 # All rights reserved.
-# https://github.com/django/django/blob/master/LICENSE
+# https://github.com/django/django/blob/main/LICENSE
 DATETIME_RE = re.compile(
     r"(?P<year>\d{4})-(?P<month>\d{1,2})-(?P<day>\d{1,2})"
     r"[T ](?P<hour>\d{1,2}):(?P<minute>\d{1,2})"
@@ -34,7 +34,7 @@ DATETIME_RE = re.compile(
 
 # Copyright (c) Django Software Foundation and individual contributors.
 # All rights reserved.
-# https://github.com/django/django/blob/master/LICENSE
+# https://github.com/django/django/blob/main/LICENSE
 STANDARD_DURATION_RE = re.compile(
     r"^"
     r"(?:(?P<days>-?\d+) (days?, )?)?"
@@ -48,7 +48,7 @@ STANDARD_DURATION_RE = re.compile(
 
 # Copyright (c) Django Software Foundation and individual contributors.
 # All rights reserved.
-# https://github.com/django/django/blob/master/LICENSE
+# https://github.com/django/django/blob/main/LICENSE
 ISO8601_DURATION_RE = re.compile(
     r"^(?P<sign>[-+]?)"
     r"P"
@@ -63,7 +63,7 @@ ISO8601_DURATION_RE = re.compile(
 
 # Copyright (c) Django Software Foundation and individual contributors.
 # All rights reserved.
-# https://github.com/django/django/blob/master/LICENSE
+# https://github.com/django/django/blob/main/LICENSE
 POSTGRES_INTERVAL_RE = re.compile(
     r"^"
     r"(?:(?P<days>-?\d+) (days? ?))?"
@@ -178,7 +178,7 @@ def start_of_local_day(dt_or_d: dt.date | dt.datetime | None = None) -> dt.datet
 
 # Copyright (c) Django Software Foundation and individual contributors.
 # All rights reserved.
-# https://github.com/django/django/blob/master/LICENSE
+# https://github.com/django/django/blob/main/LICENSE
 def parse_datetime(dt_str: str) -> dt.datetime | None:
     """Parse a string and return a datetime.datetime.