diff --git a/searx/settings.yml b/searx/settings.yml
index 26b52d2df..f21d7f05a 100644
--- a/searx/settings.yml
+++ b/searx/settings.yml
@@ -2032,10 +2032,7 @@ doi_resolvers:
   doi.org: 'https://doi.org/'
   doai.io: 'https://dissem.in/'
   sci-hub.se: 'https://sci-hub.se/'
-  sci-hub.do: 'https://sci-hub.do/'
-  scihubtw.tw: 'https://scihubtw.tw/'
   sci-hub.st: 'https://sci-hub.st/'
-  sci-hub.bar: 'https://sci-hub.bar/'
-  sci-hub.it.nf: 'https://sci-hub.it.nf/'
+  sci-hub.ru: 'https://sci-hub.ru/'
 
 default_doi_resolver: 'oadoi.org'
diff --git a/tests/robot/settings_robot.yml b/tests/robot/settings_robot.yml
index f2c38a7cf..ddf14bcbe 100644
--- a/tests/robot/settings_robot.yml
+++ b/tests/robot/settings_robot.yml
@@ -53,10 +53,7 @@ doi_resolvers:
   doi.org: 'https://doi.org/'
   doai.io: 'https://dissem.in/'
   sci-hub.se: 'https://sci-hub.se/'
-  sci-hub.do: 'https://sci-hub.do/'
-  scihubtw.tw: 'https://scihubtw.tw/'
   sci-hub.st: 'https://sci-hub.st/'
-  sci-hub.bar: 'https://sci-hub.bar/'
-  sci-hub.it.nf: 'https://sci-hub.it.nf/'
+  sci-hub.ru: 'https://sci-hub.ru/'
 
 default_doi_resolver: 'oadoi.org'