diff --git a/searx/settings.yml b/searx/settings.yml
index f4321b89d..1e5216a43 100644
--- a/searx/settings.yml
+++ b/searx/settings.yml
@@ -232,7 +232,7 @@ engines:
     about:
       website: https://archive.is/
       wikidata_id: Q13515725
-      official_api_documentation: http://mementoweb.org/depot/native/archiveis/
+      official_api_documentation: https://mementoweb.org/depot/native/archiveis/
       use_official_api: false
       require_api_key: false
       results: HTML
@@ -758,7 +758,7 @@ engines:
   - name: library genesis
     engine: xpath
     enable_http: true
-    search_url: http://libgen.rs/search.php?req={query}
+    search_url: https://libgen.rs/search.php?req={query}
     url_xpath: //a[contains(@href,"bookfi.net/md5")]/@href
     title_xpath: //a[contains(@href,"book/")]/text()[1]
     content_xpath: //td/a[1][contains(@href,"=author")]/text()
@@ -767,7 +767,7 @@ engines:
     disabled: true
     shortcut: lg
     about:
-      website: http://libgen.rs/
+      website: https://libgen.rs/
       wikidata_id: Q22017206
       official_api_documentation:
       use_official_api: false
@@ -1201,7 +1201,7 @@ engines:
   # tmp suspended - too slow, too many errors
   #  - name: urbandictionary
   #    engine      : xpath
-  #    search_url  : http://www.urbandictionary.com/define.php?term={query}
+  #    search_url  : https://www.urbandictionary.com/define.php?term={query}
   #    url_xpath   : //*[@class="word"]/@href
   #    title_xpath : //*[@class="def-header"]
   #    content_xpath: //*[@class="meaning"]
@@ -1345,7 +1345,7 @@ engines:
   - name: wolframalpha
     shortcut: wa
     # You can use the engine using the official stable API, but you need an API
-    # key.  See: http://products.wolframalpha.com/api/
+    # key.  See: https://products.wolframalpha.com/api/
     #
     # engine: wolframalpha_api
     # api_key: ''
@@ -1365,7 +1365,7 @@ engines:
     timeout: 5.0
     disabled: true
     # You can use without an API key, but you are limited to 1000 words/day
-    # See: http://mymemory.translated.net/doc/usagelimits.php
+    # See: https://mymemory.translated.net/doc/usagelimits.php
     # api_key: ''
 
   # Required dependency: mysql-connector-python
@@ -1578,7 +1578,7 @@ engines:
 #  - name: ubuntuwiki
 #    engine: doku
 #    shortcut: uw
-#    base_url: 'http://doc.ubuntu-fr.org'
+#    base_url: 'https://doc.ubuntu-fr.org'
 
 # Be careful when enabling this engine if you are
 # running a public instance. Do not expose any sensitive