diff --git a/media_youtube.module b/media_youtube.module
index 7409737..4a7f70d 100644
--- a/media_youtube.module
+++ b/media_youtube.module
@@ -570,7 +570,7 @@ function media_youtube_emfield_data($video_id) {
     $url = 'http://youtube.com/v/'. $video_id;
     $data['playlist'] = 0;
     // Get the large thumbnail.
-    $data['thumbnail']['url'] = 'http://img.youtube.com/vi/'. $video_id .'/0.jpg';
+    $data['thumbnail']['url'] = 'https://img.youtube.com/vi/'. $video_id .'/0.jpg';
   }
 
   $response = emfield_request_header('youtube', $url);
diff --git a/providers/emvideo/youtube.inc b/providers/emvideo/youtube.inc
index 8f365b1..f2bd17f 100644
--- a/providers/emvideo/youtube.inc
+++ b/providers/emvideo/youtube.inc
@@ -180,7 +180,7 @@ function emvideo_youtube_thumbnail($field, $item, $formatter, $node, $width, $he
   }
 
   // Always return the larger image, since we're storing images locally.
-  $tn = "http://img.youtube.com/vi/{$item['value']}/0.jpg";
+  $tn = "https://img.youtube.com/vi/{$item['value']}/0.jpg";
 
   return $tn;
 }
diff --git a/themes/media_youtube.theme.inc b/themes/media_youtube.theme.inc
index a4cc8ea..b0a475e 100644
--- a/themes/media_youtube.theme.inc
+++ b/themes/media_youtube.theme.inc
@@ -49,7 +49,7 @@ function template_preprocess_media_youtube_html5(&$variables) {
   $variables['autoplay'] = isset($variables['autoplay']) ? $variables['autoplay'] : media_youtube_variable_get('autoplay');
   $variables['autoplay'] = $variables['autoplay'] ? '1' : '0';
 
-  $variables['url'] = "http://www.youtube.com/embed/{$variables['video_id']}";
+  $variables['url'] = "https://www.youtube.com/embed/{$variables['video_id']}";
   $variables['query_defaults'] = array(
     'autoplay' => $variables['autoplay'],
     'rel' => $variables['related'],
@@ -69,7 +69,7 @@ function template_preprocess_media_youtube_default_external(&$variables) {
 
   $variables['flashvars'] = drupal_query_string_encode(array('playerMode' => 'embedded'));
   $video_id = $variables['video_id'];
-  $variables['url'] = isset($variables['url']) ? $variables['url'] : "http://www.youtube.com/v/$video_id";
+  $variables['url'] = isset($variables['url']) ? $variables['url'] : "https://www.youtube.com/v/$video_id";
   $variables['url'] = check_plain($variables['url']);
   $variables['width'] = check_plain($variables['width']);
   $variables['height'] = check_plain($variables['height']);