diff --git a/tagstudio/src/core/library/alchemy/library.py b/tagstudio/src/core/library/alchemy/library.py
index 83466280e..f1432f55b 100644
--- a/tagstudio/src/core/library/alchemy/library.py
+++ b/tagstudio/src/core/library/alchemy/library.py
@@ -171,6 +171,7 @@ class Library:
     def close(self):
         if self.engine:
             self.engine.dispose()
+            del self.engine
         self.library_dir: Path | None = None
         self.storage_path = None
         self.folder = None