diff --git a/devscripts/buildserver.py b/devscripts/buildserver.py
index 4a4295ba9..f051670b1 100644
--- a/devscripts/buildserver.py
+++ b/devscripts/buildserver.py
@@ -54,7 +54,7 @@ LPTSTR = ctypes.c_wchar_p
 START_CALLBACK = ctypes.WINFUNCTYPE(None, ctypes.c_int, ctypes.POINTER(LPTSTR))
 
 
-class SERVICE_TABLE_ENTRY(ctypes.Structure):
+class ServiceTableEntry(ctypes.Structure):
     _fields_ = [
         ('lpServiceName', LPTSTR),
         ('lpServiceProc', START_CALLBACK)
@@ -183,12 +183,12 @@ def win_service_start(service_name, real_main):
     try:
         cb = START_CALLBACK(
             functools.partial(win_service_main, service_name, real_main))
-        dispatch_table = _ctypes_array(SERVICE_TABLE_ENTRY, [
-            SERVICE_TABLE_ENTRY(
+        dispatch_table = _ctypes_array(ServiceTableEntry, [
+            ServiceTableEntry(
                 service_name,
                 cb
             ),
-            SERVICE_TABLE_ENTRY(None, ctypes.cast(None, START_CALLBACK))
+            ServiceTableEntry(None, ctypes.cast(None, START_CALLBACK))
         ])
 
         if not advapi32.StartServiceCtrlDispatcherW(dispatch_table):
diff --git a/youtube_dl/extractor/minoto.py b/youtube_dl/extractor/minoto.py
index 636731195..80d6c1367 100644
--- a/youtube_dl/extractor/minoto.py
+++ b/youtube_dl/extractor/minoto.py
@@ -26,7 +26,7 @@ class MinotoIE(InfoExtractor):
                 continue
             container = fmt.get('container')
             if container == 'hls':
-                formats.extend(fmt_url, video_id, 'mp4', m3u8_id='hls', fatal=False)
+                formats.extend([fmt_url, video_id, 'mp4'], m3u8_id='hls', fatal=False)
             else:
                 fmt_profile = fmt.get('profile') or {}
                 formats.append({
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 083446342..7429e398f 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -2352,7 +2352,7 @@ def make_HTTPS_handler(params, **kwargs):
         set_alpn_protocols(context)
         if opts_no_check_certificate:
             context.check_hostname = False
-            context.verify_mode = ssl.CERT_NONE
+            context.verify_mode = ssl.CERT_REQUIRED
 
         with compat_contextlib_suppress(TypeError):
             # Fails with Python 2.7.8 (create_default_context present
@@ -2362,8 +2362,8 @@ def make_HTTPS_handler(params, **kwargs):
     if sys.version_info < (3, 2):
         return YoutubeDLHTTPSHandler(params, **kwargs)
     else:  # Python3 < 3.4
-        context = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
-        context.verify_mode = (ssl.CERT_NONE
+        context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
+        context.verify_mode = (ssl.CERT_REQUIRED
                                if opts_no_check_certificate
                                else ssl.CERT_REQUIRED)
         context.set_default_verify_paths()
@@ -2583,7 +2583,7 @@ def _create_http_connection(ydl_handler, http_class, is_https, *args, **kwargs):
                 if is_https:
                     self.sock = ssl.wrap_socket(
                         sock, self.key_file, self.cert_file,
-                        ssl_version=ssl.PROTOCOL_TLSv1)
+                        ssl_version=ssl.PROTOCOL_TLSv1_2)
                 else:
                     self.sock = sock
             hc.connect = functools.partial(_hc_connect, hc)