diff --git a/appinfo/info.xml b/appinfo/info.xml
index 62d63f6..694e3d3 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -14,6 +14,6 @@
     <ocsid>174716</ocsid>
     <dependencies>
         <owncloud min-version="8.0" max-version="9.1"/>
-        <nextcloud min-version="9" max-version="11" />
+        <nextcloud min-version="9" max-version="12" />
     </dependencies>
 </info>
diff --git a/db/colormapper.php b/db/colormapper.php
index ce3d41c..f553f51 100644
--- a/db/colormapper.php
+++ b/db/colormapper.php
@@ -1,13 +1,13 @@
 <?php
 namespace OCA\QuickNotes\Db;
 
-use OCP\IDb;
+use OCP\IDBConnection;
 use OCP\AppFramework\Db\Mapper;
 use OCP\AppFramework\Db\DoesNotExistException;
 
 class ColorMapper extends Mapper {
 
-	public function __construct(IDb $db) {
+	public function __construct(IDBConnection $db) {
 		parent::__construct($db, 'quicknotes_colors', '\OCA\QuickNotes\Db\Color');
 	}
 
diff --git a/db/notesharemapper.php b/db/notesharemapper.php
index aefbd45..f9d9d6b 100644
--- a/db/notesharemapper.php
+++ b/db/notesharemapper.php
@@ -1,13 +1,13 @@
 <?php
 namespace OCA\QuickNotes\Db;
 
-use OCP\IDb;
+use OCP\IDBConnection;
 use OCP\AppFramework\Db\Mapper;
 use OCP\AppFramework\Db\DoesNotExistException;
 
 class NoteShareMapper extends Mapper {
 
-	public function __construct(IDb $db) {
+	public function __construct(IDBConnection $db) {
 		parent::__construct($db, 'quicknotes_shares', '\OCA\QuickNotes\Db\NoteShare');
 	}
 
diff --git a/db/taskmapper.php b/db/taskmapper.php
index ff2ea75..6fbbc9f 100644
--- a/db/taskmapper.php
+++ b/db/taskmapper.php
@@ -1,12 +1,12 @@
 <?php
 namespace OCA\QuickNotes\Db;
 
-use OCP\IDb;
+use OCP\IDBConnection;
 use OCP\AppFramework\Db\Mapper;
 
 class TaskMapper extends Mapper {
 
-	public function __construct(IDb $db) {
+	public function __construct(IDBConnection $db) {
 		parent::__construct($db, 'quicknotes_tasks', '\OCA\QuickNotes\Db\Tasks');
 	}