diff --git a/composer.json b/composer.json
index 34818470..3997253f 100644
--- a/composer.json
+++ b/composer.json
@@ -1,7 +1,7 @@
 {
 	"require-dev": {
 		"christophwurst/nextcloud": "^20.0",
-		"nextcloud/coding-standard": "^0.3.0",
+		"nextcloud/coding-standard": "^0.5.0",
 		"squizlabs/php_codesniffer": "3.*",
 		"phan/phan": "^3.0",
 		"guzzlehttp/guzzle": "^7.0",
diff --git a/lib/Controller/NotesApiController.php b/lib/Controller/NotesApiController.php
index 9f639bd9..dc98c2bf 100644
--- a/lib/Controller/NotesApiController.php
+++ b/lib/Controller/NotesApiController.php
@@ -53,7 +53,7 @@ class NotesApiController extends ApiController {
 			}
 			$notesData = array_map(function ($note) use ($metas, $pruneBefore, $exclude) {
 				$lastUpdate = $metas[$note->getId()]->getLastUpdate();
-				if ($pruneBefore && $lastUpdate<$pruneBefore) {
+				if ($pruneBefore && $lastUpdate < $pruneBefore) {
 					return [ 'id' => $note->getId() ];
 				} else {
 					return $note->getData($exclude);
diff --git a/lib/Controller/NotesController.php b/lib/Controller/NotesController.php
index c7bb58bc..97ac10a2 100644
--- a/lib/Controller/NotesController.php
+++ b/lib/Controller/NotesController.php
@@ -54,7 +54,7 @@ class NotesController extends Controller {
 		$metas = $this->metaService->updateAll($userId, $data['notes']);
 		$notes = array_map(function ($note) use ($metas, $pruneBefore) {
 			$lastUpdate = $metas[$note->getId()]->getLastUpdate();
-			if ($pruneBefore && $lastUpdate<$pruneBefore) {
+			if ($pruneBefore && $lastUpdate < $pruneBefore) {
 				return [ 'id' => $note->getId() ];
 			} else {
 				return $note->getData([ 'content' ]);
diff --git a/lib/Service/Note.php b/lib/Service/Note.php
index 3469a818..d9b50cef 100644
--- a/lib/Service/Note.php
+++ b/lib/Service/Note.php
@@ -136,7 +136,7 @@ class Note {
 	 * @throws \OCP\Files\NotPermittedException
 	 */
 	public function setTitleCategory(string $title, ?string $category = null) : void {
-		if ($category===null) {
+		if ($category === null) {
 			$category = $this->getCategory();
 		}
 		$oldParent = $this->file->getParent();
diff --git a/lib/Service/NoteUtil.php b/lib/Service/NoteUtil.php
index 5ad87771..1ca19598 100644
--- a/lib/Service/NoteUtil.php
+++ b/lib/Service/NoteUtil.php
@@ -166,7 +166,7 @@ class NoteUtil {
 	public function deleteEmptyFolder(Folder $folder, Folder $notesFolder) : void {
 		$content = $folder->getDirectoryListing();
 		$isEmpty = !count($content);
-		$isNotesFolder = $folder->getPath()===$notesFolder->getPath();
+		$isNotesFolder = $folder->getPath() === $notesFolder->getPath();
 		if ($isEmpty && !$isNotesFolder) {
 			$this->util->logger->debug('Deleting empty category folder '.$folder->getPath());
 			$parent = $folder->getParent();
diff --git a/lib/Service/Util.php b/lib/Service/Util.php
index 95b488a7..2ef998ed 100644
--- a/lib/Service/Util.php
+++ b/lib/Service/Util.php
@@ -23,7 +23,7 @@ class Util {
 	}
 
 	public static function retryIfLocked(callable $f, int $maxRetries = 5, int $sleep = 1) {
-		for ($try=1; $try <= $maxRetries; $try++) {
+		for ($try = 1; $try <= $maxRetries; $try++) {
 			try {
 				return $f();
 			} catch (\OCP\Lock\LockedException $e) {
diff --git a/tests/api/AbstractAPITest.php b/tests/api/AbstractAPITest.php
index 95d5f6c0..719af507 100644
--- a/tests/api/AbstractAPITest.php
+++ b/tests/api/AbstractAPITest.php
@@ -111,7 +111,7 @@ abstract class AbstractAPITest extends TestCase {
 				$note,
 				$messagePrefix.': Note has property '.$key.' (reference note: '.$refNote->title.')'
 			);
-			if ($key==='title') {
+			if ($key === 'title') {
 				// allow suffix for title (e.g. "Note title (2)")
 				$this->assertStringStartsWith(
 					$refNote->$key,
@@ -125,7 +125,7 @@ abstract class AbstractAPITest extends TestCase {
 						$messagePrefix.': Property '.$key.' suffix (reference note: '.$refNote->title.')'
 					);
 				}
-			} elseif ($key==='modified') {
+			} elseif ($key === 'modified') {
 				// allow delta if the test runs slowly
 				$this->assertEqualsWithDelta(
 					$refNote->$key,
diff --git a/tests/api/CommonAPITest.php b/tests/api/CommonAPITest.php
index d2afb841..3930bb12 100644
--- a/tests/api/CommonAPITest.php
+++ b/tests/api/CommonAPITest.php
@@ -232,10 +232,10 @@ abstract class CommonAPITest extends AbstractAPITest {
 		$note = $notes[0]; // @phan-suppress-current-line PhanTypeArraySuspiciousNullable
 		$request = (object)[ 'content' => 'New test content' ];
 		// update will fail
-		$response1 = $this->http->request('PUT', 'notes/'.$note->id, [ 'auth' => $auth, 'json' =>  $request]);
+		$response1 = $this->http->request('PUT', 'notes/'.$note->id, [ 'auth' => $auth, 'json' => $request]);
 		$this->assertEquals(507, $response1->getStatusCode());
 		// craete will fail
-		$response2 = $this->http->request('POST', 'notes', [ 'auth' => $auth, 'json' =>  $request]);
+		$response2 = $this->http->request('POST', 'notes', [ 'auth' => $auth, 'json' => $request]);
 		$this->assertEquals(507, $response2->getStatusCode());
 	}
 
diff --git a/tests/nextcloud-version.php b/tests/nextcloud-version.php
index 4fc8a315..86498ceb 100644
--- a/tests/nextcloud-version.php
+++ b/tests/nextcloud-version.php
@@ -14,7 +14,7 @@ function getNCVersionFromComposer($path) {
 	}
 	$dev = getValidProperty($json, 'require-dev');
 	$v = getValidProperty($dev, 'christophwurst/nextcloud');
-	if (substr($v, 0, 1)=='^') {
+	if (substr($v, 0, 1) == '^') {
 		$v = substr($v, 1);
 	}
 	return $v;
@@ -36,7 +36,7 @@ function getNCVersionFromComposerBranchAlias($path) {
 	$extra = getValidProperty($json, 'extra');
 	$branchAlias = getValidProperty($extra, 'branch-alias');
 	$v = getValidProperty($branchAlias, 'dev-master');
-	if (substr($v, -4)=='-dev') {
+	if (substr($v, -4) == '-dev') {
 		$v = substr($v, 0, -4);
 	}
 	return $v;
@@ -83,7 +83,7 @@ function versionCompare($sv1, $sv2, $type) {
 	$v1 = explode('.', $sv1);
 	$v2 = explode('.', $sv2);
 	$count = min(count($v1), count($v2));
-	for ($i=0; $i<$count; $i++) {
+	for ($i = 0; $i < $count; $i++) {
 		if ($type == 'max' && $v1[$i] < $v2[$i]) {
 			return true;
 		}