diff --git a/appinfo/info.xml b/appinfo/info.xml
index bb3c1cb..88716b2 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -5,7 +5,7 @@
     <name>Quick notes</name>
     <summary>Quick notes with a basic rich text</summary>
     <description>Quick notes with a basic rich text</description>
-    <version>0.7.1</version>
+    <version>0.7.2</version>
     <licence>agpl</licence>
     <author>Matias De lellis</author>
     <namespace>QuickNotes</namespace>
@@ -20,6 +20,6 @@
     <screenshot>https://raw.githubusercontent.com/matiasdelellis/quicknotes/master/doc/quicknotes-attachments.jpeg</screenshot>
     <screenshot>https://raw.githubusercontent.com/matiasdelellis/quicknotes/master/doc/quicknotes-shared-note.jpeg</screenshot>
     <dependencies>
-        <nextcloud min-version="21" max-version="21"/>
+        <nextcloud min-version="21" max-version="22"/>
     </dependencies>
 </info>
diff --git a/lib/Db/Task.php b/lib/Db/Task.php
deleted file mode 100644
index f087161..0000000
--- a/lib/Db/Task.php
+++ /dev/null
@@ -1,24 +0,0 @@
-<?php
-namespace OCA\QuickNotes\Db;
-
-use JsonSerializable;
-
-use OCP\AppFramework\Db\Entity;
-
-class Note extends Entity implements JsonSerializable {
-
-	protected $description;
-	protected $done;
-	protected $ordering;
-	protected $noteId;
-
-	public function jsonSerialize() {
-		return [
-			'id' => $this->id,
-			'description' => $this->description,
-			'done' => $this->done,
-			'ordering' => $this->ordering,
-			'noteId' => $this->noteId
-		];
-	}
-}
\ No newline at end of file
diff --git a/lib/Db/TaskMapper.php b/lib/Db/TaskMapper.php
deleted file mode 100644
index 6fbbc9f..0000000
--- a/lib/Db/TaskMapper.php
+++ /dev/null
@@ -1,23 +0,0 @@
-<?php
-namespace OCA\QuickNotes\Db;
-
-use OCP\IDBConnection;
-use OCP\AppFramework\Db\Mapper;
-
-class TaskMapper extends Mapper {
-
-	public function __construct(IDBConnection $db) {
-		parent::__construct($db, 'quicknotes_tasks', '\OCA\QuickNotes\Db\Tasks');
-	}
-
-	public function find($id, $noteId) {
-		$sql = 'SELECT * FROM *PREFIX*quicknotes_tasks WHERE id = ? AND note_id = ?';
-		return $this->findEntity($sql, [$id, $noteId]);
-	}
-
-	public function findAll($noteId) {
-		$sql = 'SELECT * FROM *PREFIX*quicknotes_tasks WHERE note_id = ?';
-		return $this->findEntities($sql, [$noteId]);
-	}
-
-}
\ No newline at end of file
diff --git a/lib/Migration/Version000204Date20200530211356.php b/lib/Migration/Version000204Date20200530211356.php
index d229f4e..f2a54cb 100644
--- a/lib/Migration/Version000204Date20200530211356.php
+++ b/lib/Migration/Version000204Date20200530211356.php
@@ -127,35 +127,6 @@ class Version000204Date20200530211356 extends SimpleMigrationStep {
 			$table->setPrimaryKey(['id']);
 		}
 
-		if (!$schema->hasTable('quicknotes_tasks')) {
-			$table = $schema->createTable('quicknotes_tasks');
-			$table->addColumn('id', 'bigint', [
-				'autoincrement' => true,
-				'notnull' => true,
-				'length' => 8,
-				'unsigned' => true,
-			]);
-			$table->addColumn('note_id', 'bigint', [
-				'notnull' => true,
-				'length' => 8,
-				'unsigned' => true,
-			]);
-			$table->addColumn('description', 'string', [
-				'notnull' => true,
-				'length' => 200,
-				'default' => '',
-			]);
-			$table->addColumn('done', 'boolean', [
-				'notnull' => true,
-				'default' => false,
-			]);
-			$table->addColumn('ordering', 'integer', [
-				'notnull' => true,
-				'default' => 0,
-			]);
-			$table->setPrimaryKey(['id']);
-		}
-
 		if (!$schema->hasTable('quicknotes_shares')) {
 			$table = $schema->createTable('quicknotes_shares');
 			$table->addColumn('id', 'bigint', [
diff --git a/lib/Migration/Version000205Date20200604122312.php b/lib/Migration/Version000205Date20200604122312.php
index c2ce3fa..d22846f 100644
--- a/lib/Migration/Version000205Date20200604122312.php
+++ b/lib/Migration/Version000205Date20200604122312.php
@@ -26,7 +26,7 @@ class Version000205Date20200604122312 extends SimpleMigrationStep {
 
 		$table = $schema->getTable('quicknotes_notes');
 		$table->addColumn('pinned', 'boolean', [
-			'notnull' => true,
+			'notnull' => false,
 			'default' => false,
 		]);
 		return $schema;
diff --git a/lib/Migration/Version00720Date20210708130231.php b/lib/Migration/Version00720Date20210708130231.php
new file mode 100644
index 0000000..e49df60
--- /dev/null
+++ b/lib/Migration/Version00720Date20210708130231.php
@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OCA\QuickNotes\Migration;
+
+use Closure;
+use OCP\DB\ISchemaWrapper;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+
+/**
+ * Auto-generated migration step: Please modify to your needs!
+ */
+class Version00720Date20210708130231 extends SimpleMigrationStep {
+
+	/**
+	 * @param IOutput $output
+	 * @param Closure $schemaClosure The `\Closure` returns a `ISchemaWrapper`
+	 * @param array $options
+	 * @return null|ISchemaWrapper
+	 */
+	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
+		/** @var ISchemaWrapper $schema */
+		$schema = $schemaClosure();
+
+		if ($schema->hasTable('quicknotes_tasks')) {
+			$schema->dropTable('quicknotes_tasks');
+		}
+
+		$this->ensureColumnIsNullable($schema, 'quicknotes_notes', 'pinned');
+
+		return $schema;
+	}
+
+	protected function ensureColumnIsNullable(ISchemaWrapper $schema, string $tableName, string $columnName): bool {
+		$table = $schema->getTable($tableName);
+		$column = $table->getColumn($columnName);
+
+		if ($column->getNotnull()) {
+			$column->setNotnull(false);
+			return true;
+		}
+
+		return false;
+	}
+
+}