diff --git a/ChangeLog b/ChangeLog
index 21f98de..2cbe2ec 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,7 @@ List of changes between releases of Extension:JsCalendar.
 == master branch (will become JsCalendar 0.3.4 or 0.4.0, depending on magnitude of changes) ==
 
 Features:
+* Support MediaWiki 1.43.
 * Added an option to use FullCalendar 5 (most current version) instead of FullCalendar 2.9.1.
 	This is experimental, because the styling of v5 calendar is preliminary and may be changed later.
 	Can be enabled with $wgJsCalendarFullCalendarVersion = 5;
diff --git a/includes/EventCalendar.php b/includes/EventCalendar.php
index 2067a2d..8097eef 100644
--- a/includes/EventCalendar.php
+++ b/includes/EventCalendar.php
@@ -103,7 +103,7 @@ public static function findEvents( array $opt, Parser $recursiveParser ) {
 		$res = $query->getResult();
 
 		// Obtain connections to DB/cache that may or may not be used for storing snippets in cache.
-		$dbw = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection( DB_MASTER );
+		$dbw = MediaWikiServices::getInstance()->getDBLoadBalancer()->getConnection( DB_PRIMARY );
 		$dbCache = ObjectCache::getInstance( CACHE_DB );
 
 		$eventmap = [];
diff --git a/tests/phpunit/EventCalendarTest.php b/tests/phpunit/EventCalendarTest.php
index 6070748..fa632c4 100644
--- a/tests/phpunit/EventCalendarTest.php
+++ b/tests/phpunit/EventCalendarTest.php
@@ -730,7 +730,7 @@ public function testSnippetCacheWasUsed() {
 		$cache = ObjectCache::getInstance( CACHE_DB );
 		$cacheKey = $cache->makeKey( 'jscalendar-snippet-' ) . $pageId;
 
-		$dbw = $this->getServiceContainer()->getDBLoadBalancer()->getConnection( DB_MASTER );
+		$dbw = $this->getServiceContainer()->getDBLoadBalancer()->getConnection( DB_PRIMARY );
 		$dbw->insert( 'objectcache', [
 			'keyname' => $cache->makeKey( 'jscalendar-snippet-' ) . $pageId,
 			'value' => $expectedSnippet,