diff --git a/ni_python_styleguide/_config_constants.py b/ni_python_styleguide/_config_constants.py
index 289052f9..9ba30695 100644
--- a/ni_python_styleguide/_config_constants.py
+++ b/ni_python_styleguide/_config_constants.py
@@ -4,3 +4,4 @@
 
 FLAKE8_CONFIG_FILE = __FILE_DIR / "config.ini"
 BLACK_CONFIG_FILE = __FILE_DIR / "config.toml"
+ISORT_CONFIG_FILE = BLACK_CONFIG_FILE
diff --git a/ni_python_styleguide/_fix.py b/ni_python_styleguide/_fix.py
index 478ecb9e..07957f85 100644
--- a/ni_python_styleguide/_fix.py
+++ b/ni_python_styleguide/_fix.py
@@ -1,4 +1,3 @@
-import fileinput
 import logging
 import pathlib
 from collections import defaultdict
@@ -8,6 +7,7 @@
 import isort
 
 from ni_python_styleguide import _acknowledge_existing_errors
+from ni_python_styleguide import _config_constants
 from ni_python_styleguide import _format
 from ni_python_styleguide import _utils
 
@@ -67,42 +67,19 @@ def _split_imports_line(lines: str, *_, **__):
 
 def _sort_imports(file: pathlib.Path, app_import_names):
     raw = file.read_text()
+    isort_config = isort.Config(
+        settings_file=str(_config_constants.ISORT_CONFIG_FILE),
+        known_first_party=filter(None, app_import_names.split(",")),
+    )
     output = isort.code(
         raw,
-        multi_line_output=3,
-        line_length=1,
-        known_first_party=filter(None, app_import_names.split(",")),
+        config=isort_config,
     )
     file.write_text(output)
 
 
-def _handle_multiple_import_lines(bad_file: pathlib.Path):
-    multiline_string_checker = _utils.string_helpers.InMultiLineStringChecker(
-        lines=bad_file.read_text(encoding=_utils.DEFAULT_ENCODING).splitlines()
-    )
-    with fileinput.FileInput(files=[str(bad_file)], inplace=True) as f:
-        for line_no, line in enumerate(f):
-            working_line = line
-            if multiline_string_checker.in_multiline_string(line_no + 1):
-                print(working_line, end="")
-                continue
-            working_line = _split_imports_line(working_line)
-            print(working_line, end="")
-
-
 def _format_imports(file: pathlib.Path, app_import_names: Iterable[str]) -> None:
     _sort_imports(file, app_import_names=app_import_names)
-    start_line, end_line = _utils.code_analysis.find_import_region(file)
-    file_lines = file.read_text().splitlines()
-    before = file_lines[:start_line]
-    import_lines = file_lines[start_line:end_line]
-    after = file_lines[end_line:]
-    with _utils.temp_file.multi_access_tempfile(suffix=".py") as temp_py_file:
-        temp_py_file.write_text("\n".join(import_lines))
-        _format.format(temp_py_file, "--line-length=300")  # condense any split lines
-        _handle_multiple_import_lines(temp_py_file)
-        handled_import_region = temp_py_file.read_text().splitlines()
-    file.write_text("\n".join(before + handled_import_region + after))
     _format.format(file)
 
 
diff --git a/ni_python_styleguide/config.toml b/ni_python_styleguide/config.toml
index ff7e9c2b..2df362e5 100644
--- a/ni_python_styleguide/config.toml
+++ b/ni_python_styleguide/config.toml
@@ -4,3 +4,8 @@
 
 [tool.black]
 line-length = 100
+
+[tool.isort]
+profile = "black"
+combine_as_imports = true
+force_single_line = true
diff --git a/tests/test_cli/fix_test_cases__snapshots/basic_example/output.py b/tests/test_cli/fix_test_cases__snapshots/basic_example/output.py
index 139568e0..3fe1aa45 100644
--- a/tests/test_cli/fix_test_cases__snapshots/basic_example/output.py
+++ b/tests/test_cli/fix_test_cases__snapshots/basic_example/output.py
@@ -2,9 +2,9 @@
 import pathlib
 from os import access
 from os import path
-from typing import (
+from typing import (  # noqa F401: un-used import comment that is actually used, should get removed in --aggressive (auto-generated noqa)
     Hashable,
-)  # noqa F401: un-used import comment that is actually used, should get removed in --aggressive (auto-generated noqa)
+)
 from typing import Iterable
 from typing import List