diff --git a/lib/Migration/TimestampMigration.php b/lib/Migration/TimestampMigration.php
index dc6fb5f..3350657 100644
--- a/lib/Migration/TimestampMigration.php
+++ b/lib/Migration/TimestampMigration.php
@@ -5,21 +5,21 @@ namespace OCA\GPodderSync\Migration;
 
 use OCP\IDBConnection;
 use OCP\Migration\IOutput;
-use Safe\DateTime;
+use DateTime;
 
 class TimestampMigration implements \OCP\Migration\IRepairStep
 {
-	private IDBConnection $db;
+    private IDBConnection $db;
 
-	public function __construct(IDBConnection $db)
-	{
-		$this->db = $db;
-	}
+    public function __construct(IDBConnection $db)
+    {
+        $this->db = $db;
+    }
 
-	/**
+    /**
      * @inheritDoc
      */
-    public function getName() : string
+    public function getName(): string
     {
         return "Migrate timestamp values to integer to store unix epoch";
     }
@@ -29,22 +29,27 @@ class TimestampMigration implements \OCP\Migration\IRepairStep
      */
     public function run(IOutput $output)
     {
-		$queryTimestamps = 'SELECT id, timestamp FROM `*PREFIX*gpodder_episode_action` WHERE timestamp_epoch = 0';
-		$timestamps = $this->db->executeQuery($queryTimestamps)->fetchAll();
+        $queryTimestamps =
+            "SELECT id, timestamp FROM `*PREFIX*gpodder_episode_action` WHERE timestamp_epoch = 0";
+        $timestamps = $this->db->executeQuery($queryTimestamps)->fetchAll();
 
-		$result = 0;
+        $result = 0;
 
-		foreach ($timestamps as $timestamp) {
-			$timestampEpoch = (new DateTime($timestamp["timestamp"]))->format("U");
-			$sql = 'UPDATE `*PREFIX*gpodder_episode_action` '
-				. 'SET `timestamp_epoch` = ' . $timestampEpoch . ' '
-				. 'WHERE `id` = ' . $timestamp["id"];
+        foreach ($timestamps as $timestamp) {
+            $timestampEpoch = (new DateTime($timestamp["timestamp"]))->format(
+                "U"
+            );
+            $sql =
+                "UPDATE `*PREFIX*gpodder_episode_action` " .
+                "SET `timestamp_epoch` = " .
+                $timestampEpoch .
+                " " .
+                "WHERE `id` = " .
+                $timestamp["id"];
 
-			$result += $this->db->executeUpdate($sql);
+            $result += $this->db->executeUpdate($sql);
+        }
 
-		}
-
-		return $result;
+        return $result;
     }
-
 }