diff --git a/lib/wayback_machine_downloader.rb b/lib/wayback_machine_downloader.rb
index a00357a..04005c8 100644
--- a/lib/wayback_machine_downloader.rb
+++ b/lib/wayback_machine_downloader.rb
@@ -268,7 +268,7 @@ def download_file file_remote_info
         structure_dir_path dir_path
         open(file_path, "wb") do |file|
           begin
-            open("http://web.archive.org/web/#{file_timestamp}id_/#{file_url}", "Accept-Encoding" => "plain") do |uri|
+            URI.open("https://web.archive.org/web/#{file_timestamp}id_/#{file_url}", "Accept-Encoding" => "plain") do |uri|
               file.write(uri.read)
             end
           rescue OpenURI::HTTPError => e
diff --git a/lib/wayback_machine_downloader/archive_api.rb b/lib/wayback_machine_downloader/archive_api.rb
index f87c6f6..903f42b 100644
--- a/lib/wayback_machine_downloader/archive_api.rb
+++ b/lib/wayback_machine_downloader/archive_api.rb
@@ -1,11 +1,11 @@
 module ArchiveAPI
 
   def get_raw_list_from_api url, page_index
-    request_url = "http://web.archive.org/cdx/search/xd?url="
+    request_url = "https://web.archive.org/cdx/search/xd?url="
     request_url += url
     request_url += parameters_for_api page_index
 
-    open(request_url).read
+    URI.open(request_url).read
   end
 
   def parameters_for_api page_index