diff --git a/src/Upgrades/Upgrade36.php b/src/Upgrades/Upgrade36.php
new file mode 100644
index 00000000..d2c0344e
--- /dev/null
+++ b/src/Upgrades/Upgrade36.php
@@ -0,0 +1,16 @@
+<?php
+namespace Szurubooru\Upgrades;
+use Szurubooru\DatabaseConnection;
+
+class Upgrade36 implements IUpgrade
+{
+	public function run(DatabaseConnection $databaseConnection)
+	{
+		$pdo = $databaseConnection->getPDO();
+
+		$pdo->exec('ALTER TABLE postNotes MODIFY x DOUBLE(7,3)');
+		$pdo->exec('ALTER TABLE postNotes MODIFY y DOUBLE(7,3)');
+		$pdo->exec('ALTER TABLE postNotes MODIFY width DOUBLE(7,3)');
+		$pdo->exec('ALTER TABLE postNotes MODIFY height DOUBLE(7,3)');
+	}
+}
diff --git a/src/di.php b/src/di.php
index 06e7bf16..5b2f8459 100644
--- a/src/di.php
+++ b/src/di.php
@@ -52,6 +52,7 @@ return [
 			$container->get(\Szurubooru\Upgrades\Upgrade33::class),
 			$container->get(\Szurubooru\Upgrades\Upgrade34::class),
 			$container->get(\Szurubooru\Upgrades\Upgrade35::class),
+			$container->get(\Szurubooru\Upgrades\Upgrade36::class),
 		];
 	}),