diff --git a/django/contrib/gis/geoip2/__init__.py b/django/contrib/gis/geoip2/__init__.py
index 2d7d7a7e92..191706b01e 100644
--- a/django/contrib/gis/geoip2/__init__.py
+++ b/django/contrib/gis/geoip2/__init__.py
@@ -7,7 +7,7 @@ GeoIP(R) is a registered trademark of MaxMind, Inc.
 
 For IP-based geolocation, this module requires the GeoLite2 Country and City
 datasets, in binary format (CSV will not work!). The datasets may be
-downloaded from MaxMind at http://dev.maxmind.com/geoip/geoip2/geolite2/.
+downloaded from MaxMind at https://dev.maxmind.com/geoip/geoip2/geolite2/.
 Grab GeoLite2-Country.mmdb.gz and GeoLite2-City.mmdb.gz, and unzip them in the
 directory corresponding to settings.GEOIP_PATH.
 """
diff --git a/django/core/files/locks.py b/django/core/files/locks.py
index b02faaa181..fdb9665332 100644
--- a/django/core/files/locks.py
+++ b/django/core/files/locks.py
@@ -5,7 +5,7 @@ Based partially on an example by Jonathan Feignberg in the Python
 Cookbook [1] (licensed under the Python Software License) and a ctypes port by
 Anatoly Techtonik for Roundup [2] (license [3]).
 
-[1] http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65203
+[1] https://code.activestate.com/recipes/65203/
 [2] https://sourceforge.net/p/roundup/code/ci/default/tree/roundup/backends/portalocker.py
 [3] https://sourceforge.net/p/roundup/code/ci/default/tree/COPYING.txt
 
diff --git a/django/db/backends/mysql/schema.py b/django/db/backends/mysql/schema.py
index b45d3b8d98..17827c2195 100644
--- a/django/db/backends/mysql/schema.py
+++ b/django/db/backends/mysql/schema.py
@@ -126,7 +126,7 @@ class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
         MySQL can remove an implicit FK index on a field when that field is
         covered by another index like a unique_together. "covered" here means
         that the more complex index starts like the simpler one.
-        http://bugs.mysql.com/bug.php?id=37910 / Django ticket #24757
+        https://bugs.mysql.com/bug.php?id=37910 / Django ticket #24757
         We check here before removing the [unique|index]_together if we have to
         recreate a FK index.
         """
diff --git a/django/http/multipartparser.py b/django/http/multipartparser.py
index f464caa1b4..ddf7cfa2f6 100644
--- a/django/http/multipartparser.py
+++ b/django/http/multipartparser.py
@@ -685,7 +685,7 @@ def parse_header(line):
             name = p[:i].strip().lower().decode('ascii')
             if name.endswith('*'):
                 # Lang/encoding embedded in the value (like "filename*=UTF-8''file.ext")
-                # http://tools.ietf.org/html/rfc2231#section-4
+                # https://tools.ietf.org/html/rfc2231#section-4
                 name = name[:-1]
                 if p.count(b"'") == 2:
                     has_encoding = True
diff --git a/django/utils/dateformat.py b/django/utils/dateformat.py
index a03b127785..70bfb32e01 100644
--- a/django/utils/dateformat.py
+++ b/django/utils/dateformat.py
@@ -1,6 +1,6 @@
 """
 PHP date() style date formatting
-See http://www.php.net/date for format strings
+See https://www.php.net/date for format strings
 
 Usage:
 >>> import datetime
diff --git a/django/utils/jslex.py b/django/utils/jslex.py
index d775d23a35..8abf5f1126 100644
--- a/django/utils/jslex.py
+++ b/django/utils/jslex.py
@@ -92,7 +92,7 @@ class JsLexer(Lexer):
     # lex correct JavaScript, so much of this is simplified.
 
     # Details of JavaScript lexical structure are taken from
-    # http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf
+    # https://www.ecma-international.org/publications-and-standards/standards/ecma-262/
 
     # A useful explanation of automatic semicolon insertion is at
     # http://inimino.org/~inimino/blog/javascript_semicolons
diff --git a/tests/utils_tests/test_crypto.py b/tests/utils_tests/test_crypto.py
index 9dbfd9fe57..d6e0774bf3 100644
--- a/tests/utils_tests/test_crypto.py
+++ b/tests/utils_tests/test_crypto.py
@@ -58,7 +58,7 @@ class TestUtilsCryptoMisc(SimpleTestCase):
 
 class TestUtilsCryptoPBKDF2(unittest.TestCase):
 
-    # http://tools.ietf.org/html/draft-josefsson-pbkdf2-test-vectors-06
+    # https://tools.ietf.org/html/draft-josefsson-pbkdf2-test-vectors-06
     rfc_vectors = [
         {
             "args": {