diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index 048dc5b3c..3393e6f98 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -23,7 +23,7 @@
 
 namespace OCA\Deck\AppInfo;
 
-$version = \OC_Util::getVersion()[0];
+$version = \OCP\Util::getVersion()[0];
 if ($version >= 20) {
 	class Application extends Application20 {
 	}
diff --git a/lib/AppInfo/ApplicationLegacy.php b/lib/AppInfo/ApplicationLegacy.php
index 22a3f6ac5..eec44dd4b 100644
--- a/lib/AppInfo/ApplicationLegacy.php
+++ b/lib/AppInfo/ApplicationLegacy.php
@@ -24,7 +24,6 @@
 namespace OCA\Deck\AppInfo;
 
 use Exception;
-use OC_Util;
 use OCA\Deck\Activity\CommentEventHandler;
 use OCA\Deck\Capabilities;
 use OCA\Deck\Collaboration\Resources\ResourceProvider;
@@ -172,7 +171,7 @@ class ApplicationLegacy extends App {
 	}
 
 	protected function registerCollaborationResources(): void {
-		$version = OC_Util::getVersion()[0];
+		$version = \OCP\Util::getVersion()[0];
 		if ($version < 16) {
 			return;
 		}
diff --git a/lib/Service/BoardService.php b/lib/Service/BoardService.php
index 477add264..516ca158a 100644
--- a/lib/Service/BoardService.php
+++ b/lib/Service/BoardService.php
@@ -532,7 +532,7 @@ class BoardService {
 		$this->changeHelper->boardChanged($boardId);
 
 		// TODO: use the dispatched event for this
-		$version = \OC_Util::getVersion()[0];
+		$version = \OCP\Util::getVersion()[0];
 		if ($version >= 16) {
 			try {
 				$resourceProvider = \OC::$server->query(\OCA\Deck\Collaboration\Resources\ResourceProvider::class);
@@ -621,7 +621,7 @@ class BoardService {
 		$this->activityManager->triggerEvent(ActivityManager::DECK_OBJECT_BOARD, $acl, ActivityManager::SUBJECT_BOARD_UNSHARE);
 		$this->changeHelper->boardChanged($acl->getBoardId());
 
-		$version = \OC_Util::getVersion()[0];
+		$version = \OCP\Util::getVersion()[0];
 		if ($version >= 16) {
 			try {
 				$resourceProvider = \OC::$server->query(\OCA\Deck\Collaboration\Resources\ResourceProvider::class);