diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..9fdacdf5
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,7 @@
+[tool.black]
+target-version = ["py38"]
+line-length = 120
+safe = true
+
+[tool.isort]
+profile = "black"
diff --git a/src/watchdog/observers/inotify.py b/src/watchdog/observers/inotify.py
index 754ca5a6..fe967302 100644
--- a/src/watchdog/observers/inotify.py
+++ b/src/watchdog/observers/inotify.py
@@ -221,9 +221,13 @@ def get_event_mask_from_filter(self):
             elif cls in (DirCreatedEvent, FileCreatedEvent):
                 event_mask |= InotifyConstants.IN_MOVE | InotifyConstants.IN_CREATE
             elif cls is DirModifiedEvent:
-                event_mask |= (InotifyConstants.IN_MOVE | InotifyConstants.IN_ATTRIB |
-                               InotifyConstants.IN_MODIFY | InotifyConstants.IN_CREATE |
-                               InotifyConstants.IN_CLOSE_WRITE)
+                event_mask |= (
+                    InotifyConstants.IN_MOVE
+                    | InotifyConstants.IN_ATTRIB
+                    | InotifyConstants.IN_MODIFY
+                    | InotifyConstants.IN_CREATE
+                    | InotifyConstants.IN_CLOSE_WRITE
+                )
             elif cls is FileModifiedEvent:
                 event_mask |= InotifyConstants.IN_ATTRIB | InotifyConstants.IN_MODIFY
             elif cls in (DirDeletedEvent, FileDeletedEvent):