diff --git a/mycli/main.py b/mycli/main.py
index 1eb98f6a..20e55558 100755
--- a/mycli/main.py
+++ b/mycli/main.py
@@ -1,5 +1,4 @@
 from collections import defaultdict
-from io import open
 import os
 import sys
 import shutil
diff --git a/mycli/packages/special/iocommands.py b/mycli/packages/special/iocommands.py
index f26445ea..603bf5ef 100644
--- a/mycli/packages/special/iocommands.py
+++ b/mycli/packages/special/iocommands.py
@@ -4,7 +4,6 @@
 import logging
 import subprocess
 import shlex
-from io import open
 from time import sleep
 
 import click
diff --git a/mycli/sqlcompleter.py b/mycli/sqlcompleter.py
index 16362899..34ed9e44 100644
--- a/mycli/sqlcompleter.py
+++ b/mycli/sqlcompleter.py
@@ -1,5 +1,5 @@
 import logging
-from re import compile, escape
+import re
 from collections import Counter
 
 from prompt_toolkit.completion import Completer, Completion
@@ -900,7 +900,7 @@ def __init__(self, smart_completion=True, supported_formats=(), keyword_casing="
         self.reserved_words = set()
         for x in self.keywords:
             self.reserved_words.update(x.split())
-        self.name_pattern = compile(r"^[_a-z][_a-z0-9\$]*$")
+        self.name_pattern = re.compile(r"^[_a-z][_a-z0-9\$]*$")
 
         self.special_commands = []
         self.table_formats = supported_formats
@@ -1075,8 +1075,8 @@ def find_matches(text, collection, start_only=False, fuzzy=True, casing=None):
         completions = []
 
         if fuzzy:
-            regex = ".*?".join(map(escape, text))
-            pat = compile("(%s)" % regex)
+            regex = ".*?".join(map(re.escape, text))
+            pat = re.compile("(%s)" % regex)
             for item in collection:
                 r = pat.search(item.lower())
                 if r:
diff --git a/pyproject.toml b/pyproject.toml
index 86936fe9..ce9ad9d8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,7 +80,6 @@ ignore = [
     'E117',   # over-indented
     'W191',   # tab-indentation
     # TODO
-    'A004',   # todo enableme import shadowing builtin
     'PIE796', # todo enableme Enum contains duplicate value
 ]