diff --git a/.ruff.toml b/.ruff.toml
new file mode 100644
index 00000000..e8947bd2
--- /dev/null
+++ b/.ruff.toml
@@ -0,0 +1,2 @@
+[lint]
+select = ["E4", "E7", "E9", "F", "I", "W"]
diff --git a/readalongs/api.py b/readalongs/api.py
index c77454de..7ae413f3 100644
--- a/readalongs/api.py
+++ b/readalongs/api.py
@@ -86,7 +86,7 @@ def align(
             output_base=output_base,
             language=language,
             output_formats=output_formats,
-            **kwargs
+            **kwargs,
         )
 
         cli.align.callback(**align_args)  # type: ignore
@@ -136,7 +136,7 @@ def make_xml(
                     language=JoinerCallbackForClick(get_langs_deferred())(
                         value_groups=language
                     ),
-                    **kwargs
+                    **kwargs,
                 )
                 cli.make_xml.callback(**make_xml_args)  # type: ignore
         except OSError as e:
diff --git a/readalongs/text/make_package.py b/readalongs/text/make_package.py
index 1f012fb6..e9d418bd 100644
--- a/readalongs/text/make_package.py
+++ b/readalongs/text/make_package.py
@@ -99,9 +99,8 @@ def encode_from_path(path: str) -> str:
     ):  # We declare it to be application/readalong+xml, not what mimetypes thinks
         mime_type = "application/readalong+xml"
     elif mime[0]:
-        mime_type = mime[0].replace(
-            "video", "audio"
-        )  # Hack: until we properly extract audio from video files, force any video-based mime type to be read as audio
+        # Hack: until we properly extract audio from video files, force any video-based mime type to be read as audio
+        mime_type = mime[0].replace("video", "audio")
     else:
         mime_type = "application"
         LOGGER.warning(
diff --git a/readalongs/web_api.py b/readalongs/web_api.py
index d70d0387..cd179f39 100644
--- a/readalongs/web_api.py
+++ b/readalongs/web_api.py
@@ -166,7 +166,7 @@ async def assemble(
                 },
             }
         ]
-    )
+    ),
 ):
     """Create an input RAS from the given text (as plain text or XML).
     Also creates the required grammar, pronunciation dictionary,
diff --git a/test/basic_test_case.py b/test/basic_test_case.py
index fde3348d..5f10c27d 100644
--- a/test/basic_test_case.py
+++ b/test/basic_test_case.py
@@ -5,6 +5,7 @@
 from unittest import TestCase
 
 from click.testing import CliRunner
+
 from readalongs.log import LOGGER
 
 
diff --git a/test/run.py b/test/run.py
index ead4fda3..456af8ef 100755
--- a/test/run.py
+++ b/test/run.py
@@ -86,11 +86,11 @@ def describe_suite(suite: TestSuite):
     full_list = list(list_tests(full_suite))
     requested_list = list(list_tests(suite))
     requested_set = set(requested_list)
-    print("Test suite includes:", *sorted(requested_list), sep="\n"),
+    print("Test suite includes:", *sorted(requested_list), sep="\n")
     print(
         "\nTest suite excludes:",
         *sorted(test for test in full_list if test not in requested_set),
-        sep="\n"
+        sep="\n",
     )