diff --git a/packaged_helloworld/packaged_helloworld/packaged_helloworld.py b/packaged_helloworld/packaged_helloworld/packaged_helloworld.py
index f027ea42..427558d5 100644
--- a/packaged_helloworld/packaged_helloworld/packaged_helloworld.py
+++ b/packaged_helloworld/packaged_helloworld/packaged_helloworld.py
@@ -2,7 +2,6 @@
 from typing import Any, Dict
 
 import packaged_helloworld
-
 from zulip_bots.lib import BotHandler
 
 __version__ = packaged_helloworld.__version__
diff --git a/pyproject.toml b/pyproject.toml
index c6081ee0..1d3fa213 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -93,7 +93,21 @@ pythonpath = [
 ]
 
 [tool.ruff]
+select = [
+    "E", # style errors
+    "F", # flakes
+    "I", # import sorting
+]
 ignore = [
     "E402", # Module level import not at top of file
+    "E501", # Line too long
     "E731", # Do not assign a `lambda` expression, use a `def`
 ]
+src = [
+    "tools",
+    "zulip",
+    "zulip/integrations/zephyr",
+    "zulip_bots",
+    "zulip_botserver",
+]
+line-length = 100
diff --git a/requirements.txt b/requirements.txt
index f47fb7c1..a11f2c04 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,6 @@
 crayons
 twine
 black~=23.10.1
-isort
 mock
 pytest
 pytest-cov
diff --git a/tools/lint b/tools/lint
index 5ee68103..9eb8dfd6 100755
--- a/tools/lint
+++ b/tools/lint
@@ -38,13 +38,6 @@ def run() -> None:
     linter_config.external_linter(
         "gitlint", ["tools/lint-commits"], description="Git Lint for commit messages"
     )
-    linter_config.external_linter(
-        "isort",
-        ["isort"],
-        ["py"],
-        description="Sorts Python import statements",
-        check_arg=["--check-only", "--diff"],
-    )
     linter_config.external_linter(
         "black",
         ["black"],