diff --git a/nixprstatus/__main__.py b/nixprstatus/__main__.py
index 1ff7154..8a1a347 100644
--- a/nixprstatus/__main__.py
+++ b/nixprstatus/__main__.py
@@ -65,12 +65,14 @@ def since(
         return
     typer.echo(count)
 
+
 @watchlist_app.command()
-def list(watchlist: str|None = None, format: OutputFormat = OutputFormat.CONSOLE):
+def list(watchlist: str | None = None, format: OutputFormat = OutputFormat.CONSOLE):
     """List PRs in watchlist."""
     wl = Watchlist.from_file()
     wl.print(format=format)
 
+
 @watchlist_app.command()
 def add(pr: int):
     """Add PR to watchlist."""
@@ -80,6 +82,7 @@ def add(pr: int):
     info = wl.pr(pr)
     print(f"Added #{info.pr}: {info.title} to watchlist.")
 
+
 @watchlist_app.command()
 def remove(pr: int):
     """Remove PR from watchlist."""
@@ -88,6 +91,7 @@ def remove(pr: int):
     wl.to_file()
     print(f"Removed #{pr} from watchlist.")
 
+
 def main():
     app()
 
diff --git a/nixprstatus/watchlist.py b/nixprstatus/watchlist.py
index 88b504f..31a175a 100644
--- a/nixprstatus/watchlist.py
+++ b/nixprstatus/watchlist.py
@@ -7,6 +7,7 @@ from rich.console import Console
 
 from nixprstatus.pr import get_pr
 
+
 class OutputFormat(str, Enum):
     CONSOLE = "console"
     JSON = "json"
@@ -50,7 +51,7 @@ class Watchlist(BaseModel):
 
         title = info["title"]
         self.prs.append(PRInfo(pr=pr, title=title))
-    
+
     def remove(self, pr: int):
         self.prs = [p for p in self.prs if p.pr != pr]
 
@@ -64,7 +65,7 @@ class Watchlist(BaseModel):
                 print(self.model_dump_json())
             case _:
                 raise ValueError(f"Unknown format: {format}")
-    
+
     def pr(self, pr: int) -> PRInfo | None:
         for p in self.prs:
             if p.pr == pr:
diff --git a/tests/test_watchlist.py b/tests/test_watchlist.py
index d8c2168..b4db857 100644
--- a/tests/test_watchlist.py
+++ b/tests/test_watchlist.py
@@ -31,4 +31,4 @@ class TestWatchlist(unittest.TestCase):
     def test_get_pr(self):
         w = Watchlist(prs=[PRInfo(pr=1, title="PR 1")])
         self.assertEqual(w.pr(1), PRInfo(pr=1, title="PR 1"))
-        self.assertEqual(w.pr(2), None)
\ No newline at end of file
+        self.assertEqual(w.pr(2), None)