diff --git a/nikola/plugin_manager.py b/nikola/plugin_manager.py
index 5420c8deb..47db9f6df 100644
--- a/nikola/plugin_manager.py
+++ b/nikola/plugin_manager.py
@@ -53,6 +53,7 @@
 @dataclass(frozen=True)
 class PluginCandidate:
     """A candidate plugin that was located but not yet loaded (imported)."""
+
     name: str
     description: Optional[str]
     plugin_id: str
@@ -65,6 +66,7 @@ class PluginCandidate:
 @dataclass(frozen=True)
 class PluginInfo:
     """A plugin that was loaded (imported)."""
+
     name: str
     description: Optional[str]
     plugin_id: str