diff --git a/indexdigest/linters/linter_0002_not_used_indices.py b/indexdigest/linters/linter_0002_not_used_indices.py
index aae0ea62..a3e24522 100644
--- a/indexdigest/linters/linter_0002_not_used_indices.py
+++ b/indexdigest/linters/linter_0002_not_used_indices.py
@@ -26,10 +26,10 @@ def check_not_used_indices(database, queries):
 
     # analyze all tables used by the above queries
     # print(used_indices)
-    for table_name in used_indices.keys():
+    for table_name, table_indices in used_indices.items():
         for index in database.get_table_indices(table_name):
 
-            if index.name not in used_indices[table_name]:
+            if index.name not in table_indices:
                 yield LinterEntry(linter_type='not_used_indices', table_name=table_name,
                                   message='"{}" index was not used by provided queries'.
                                   format(index.name),
diff --git a/setup.py b/setup.py
index fe58a8c2..87bf9fd1 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@
         'dev': [
             'coverage==5.5',
             'coveralls==3.1.0',
-            'pylint==2.8.3',
+            'pylint==2.9.3',
             'pytest==6.2.4',
             'pytest-cov==2.12.1',
             'twine==3.4.1',