diff --git a/rwx/__init__.py b/rwx/__init__.py
index a721b9a..a1c5ee6 100644
--- a/rwx/__init__.py
+++ b/rwx/__init__.py
@@ -1,2 +1,3 @@
 """Read Write eXecute."""
+
 __version__ = "0.0.1"
diff --git a/rwx/cmd/squashfs/__init__.py b/rwx/cmd/squashfs/__init__.py
index 343461e..322186c 100644
--- a/rwx/cmd/squashfs/__init__.py
+++ b/rwx/cmd/squashfs/__init__.py
@@ -6,10 +6,14 @@ rwx.cmd.need("mksquashfs")
 
 
 def mksquashfs(input_root: str, output_file: str):
-    ps.run([
-        "mksquashfs",
-        input_root,
-        output_file,
-        "-comp", "zstd",
-        "-Xcompression-level", str(18),
-    ])
+    ps.run(
+        [
+            "mksquashfs",
+            input_root,
+            output_file,
+            "-comp",
+            "zstd",
+            "-Xcompression-level",
+            str(18),
+        ]
+    )
diff --git a/rwx/grub/__init__.py b/rwx/grub/__init__.py
index 57e313c..2b44e57 100644
--- a/rwx/grub/__init__.py
+++ b/rwx/grub/__init__.py
@@ -17,8 +17,13 @@ MODULES = {
 }
 
 
-def make_image(image_format: str, image_path: str, modules: list[str],
-               memdisk_path: str, pubkey_path: str | None = None) -> None:
+def make_image(
+    image_format: str,
+    image_path: str,
+    modules: list[str],
+    memdisk_path: str,
+    pubkey_path: str | None = None,
+) -> None:
     args = [
         ("grub-mkimage",),
         ("--compress", COMPRESSION),
diff --git a/rwx/log/__init__.py b/rwx/log/__init__.py
index 3502ab5..fcf01aa 100644
--- a/rwx/log/__init__.py
+++ b/rwx/log/__init__.py
@@ -16,6 +16,8 @@ def get_file_logger(name: str) -> logging.Logger:
     logger.setLevel(logging.INFO)
     #
     return logger
+
+
 def get_stream_logger() -> logging.Logger:
     out_handler = logging.StreamHandler(stream=sys.stdout)
     out_handler.setLevel(logging.INFO)
@@ -25,4 +27,6 @@ def get_stream_logger() -> logging.Logger:
     logger.setLevel(logging.INFO)
     #
     return logger
+
+
 stream = get_stream_logger()
diff --git a/rwx/prj/sphinx.py b/rwx/prj/sphinx.py
index ccb8d0f..b09d8ee 100644
--- a/rwx/prj/sphinx.py
+++ b/rwx/prj/sphinx.py
@@ -15,12 +15,18 @@ class SphinxProject(Project):
         wipe(output_root)
         arguments: list[str] = [
             "-E",
-            "-j", "2",
-            "-b", "html",
-            "-D", f"project={self.name}",
-            "-D", "master_doc={}".format("index"),
-            "-D", "html_theme={}".format("sphinx_rtd_theme"),
-            "-c", self.root,
+            "-j",
+            "2",
+            "-b",
+            "html",
+            "-D",
+            f"project={self.name}",
+            "-D",
+            "master_doc={}".format("index"),
+            "-D",
+            "html_theme={}".format("sphinx_rtd_theme"),
+            "-c",
+            self.root,
             # "-C",
             path.join(self.root, self.name),
             path.join(output_root, self.name),