diff --git a/.pylintrc b/.pylintrc
index eb6d500b..5d448343 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -59,7 +59,7 @@ confidence=
 # --enable=similarities". If you want to run only the classes checker, but have
 # no Warning level messages displayed, use"--disable=all --enable=classes
 # --disable=W"
-disable=bad-whitespace, duplicate-code
+disable=bad-whitespace, duplicate-code, consider-using-f-string
 
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6f2cf256..31fd89bd 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@ mock==4.0.3
 nose2[coverage_plugin]==0.10.0
 cov-core==1.15.0
 pycodestyle==2.7.0
-pylint==2.10.2
+pylint==2.12.2
 splinter==0.15.0
 transifex-client==0.14.3
 selenium==3.141.0
diff --git a/searx/engines/__init__.py b/searx/engines/__init__.py
index 20fa5206..351f6a4f 100644
--- a/searx/engines/__init__.py
+++ b/searx/engines/__init__.py
@@ -275,7 +275,7 @@ def get_engines_stats(preferences):
 
 
 def load_engines(engine_list):
-    global engines, engine_shortcuts
+    global engines, engine_shortcuts  # pylint: disable=global-variable-not-assigned
     engines.clear()
     engine_shortcuts.clear()
     for engine_data in engine_list:
diff --git a/searx/engines/command.py b/searx/engines/command.py
index 33270d24..aca379c6 100644
--- a/searx/engines/command.py
+++ b/searx/engines/command.py
@@ -35,7 +35,7 @@ def init(engine_settings):
     if 'command' not in engine_settings:
         raise ValueError('engine command : missing configuration key: command')
 
-    global command, working_dir, result_template, delimiter, parse_regex, timeout, environment_variables
+    global command, working_dir, delimiter, parse_regex, environment_variables
 
     command = engine_settings['command']
 
diff --git a/searx/engines/yggtorrent.py b/searx/engines/yggtorrent.py
index c2789a6a..79ebebd3 100644
--- a/searx/engines/yggtorrent.py
+++ b/searx/engines/yggtorrent.py
@@ -37,7 +37,7 @@ cookies = dict()
 
 
 def init(engine_settings=None):
-    global cookies
+    global cookies  # pylint: disable=global-variable-not-assigned
     # initial cookies
     resp = http_get(url, follow_redirects=False)
     if resp.ok:
diff --git a/tests/unit/test_external_bangs.py b/tests/unit/test_external_bangs.py
index 6a968678..541dfeff 100644
--- a/tests/unit/test_external_bangs.py
+++ b/tests/unit/test_external_bangs.py
@@ -72,31 +72,26 @@ class TestResolveBangDefinition(SearxTestCase):
 class TestGetBangDefinitionAndAutocomplete(SearxTestCase):
 
     def test_found(self):
-        global TEST_DB
         bang_definition, new_autocomplete = get_bang_definition_and_autocomplete('exam', external_bangs_db=TEST_DB)
         self.assertEqual(bang_definition, TEST_DB['trie']['exam']['*'])
         self.assertEqual(new_autocomplete, ['example'])
 
     def test_found_optimized(self):
-        global TEST_DB
         bang_definition, new_autocomplete = get_bang_definition_and_autocomplete('example', external_bangs_db=TEST_DB)
         self.assertEqual(bang_definition, TEST_DB['trie']['exam']['ple'])
         self.assertEqual(new_autocomplete, [])
 
     def test_partial(self):
-        global TEST_DB
         bang_definition, new_autocomplete = get_bang_definition_and_autocomplete('examp', external_bangs_db=TEST_DB)
         self.assertEqual(bang_definition, None)
         self.assertEqual(new_autocomplete, ['example'])
 
     def test_partial2(self):
-        global TEST_DB
         bang_definition, new_autocomplete = get_bang_definition_and_autocomplete('sea', external_bangs_db=TEST_DB)
         self.assertEqual(bang_definition, TEST_DB['trie']['sea']['*'])
         self.assertEqual(new_autocomplete, ['search', 'searching', 'seascapes', 'season'])
 
     def test_error(self):
-        global TEST_DB
         bang_definition, new_autocomplete = get_bang_definition_and_autocomplete('error', external_bangs_db=TEST_DB)
         self.assertEqual(bang_definition, None)
         self.assertEqual(new_autocomplete, [])
@@ -114,7 +109,6 @@ class TestExternalBangJson(SearxTestCase):
         self.assertEqual(result, None)
 
     def test_get_bang_url(self):
-        global TEST_DB
         url = get_bang_url(SearchQuery('test', engineref_list=[], external_bang='example'), external_bangs_db=TEST_DB)
         self.assertEqual(url, 'https://example.com/test')