diff --git a/extension.json b/extension.json
index 94db8381..d62a7a45 100644
--- a/extension.json
+++ b/extension.json
@@ -10,7 +10,7 @@
 	"descriptionmsg": "replacetext-desc",
 	"license-name": "GPL-2.0-or-later",
 	"requires": {
-		"MediaWiki": ">= 1.35.0"
+		"MediaWiki": ">= 1.40.0"
 	},
 	"type": "specialpage",
 	"GroupPermissions": {
diff --git a/src/Job.php b/src/Job.php
index c75b1e0f..d8d638e8 100644
--- a/src/Job.php
+++ b/src/Job.php
@@ -28,9 +28,7 @@ use RecentChange;
 use RequestContext;
 use TextContent;
 use Title;
-use WatchAction;
 use Wikimedia\ScopedCallback;
-use WikiPage;
 use WikitextContent;
 
 /**
@@ -100,24 +98,10 @@ class Job extends JobParent {
 			}
 
 			if ( $this->params['watch_page'] ) {
-				if ( method_exists( \MediaWiki\Watchlist\WatchlistManager::class, 'addWatch' ) ) {
-					// MW 1.37+
-					$services->getWatchlistManager()->addWatch( $current_user, $new_title );
-				} else {
-					// Method was removed, but we only invoke it in versions its
-					// still available, suppress phan error
-					// @phan-suppress-next-line PhanUndeclaredStaticMethod
-					WatchAction::doWatch( $new_title, $current_user );
-				}
-
+				$services->getWatchlistManager()->addWatch( $current_user, $new_title );
 			}
 		} else {
-			if ( method_exists( MediaWikiServices::class, 'getWikiPageFactory' ) ) {
-				// MW 1.36+
-				$wikiPage = MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $this->title );
-			} else {
-				$wikiPage = new WikiPage( $this->title );
-			}
+			$wikiPage = MediaWikiServices::getInstance()->getWikiPageFactory()->newFromTitle( $this->title );
 			$latestRevision = $wikiPage->getRevisionRecord();
 
 			if ( $latestRevision === null ) {
diff --git a/src/SpecialReplaceText.php b/src/SpecialReplaceText.php
index 7f82a5c1..89542857 100644
--- a/src/SpecialReplaceText.php
+++ b/src/SpecialReplaceText.php
@@ -21,7 +21,6 @@ namespace MediaWiki\Extension\ReplaceText;
 
 use ErrorPageError;
 use Html;
-use JobQueueGroup;
 use Language;
 use MediaWiki\Linker\LinkRenderer;
 use MediaWiki\MediaWikiServices;
@@ -188,13 +187,7 @@ class SpecialReplaceText extends SpecialPage {
 
 			$jobs = $this->createJobsForTextReplacements();
 			$services = MediaWikiServices::getInstance();
-			if ( method_exists( $services, 'getJobQueueGroup' ) ) {
-				// MW 1.37+
-				$services->getJobQueueGroup()->push( $jobs );
-			} else {
-				// @phan-suppress-next-line PhanUndeclaredStaticMethod
-				JobQueueGroup::singleton()->push( $jobs );
-			}
+			$services->getJobQueueGroup()->push( $jobs );
 
 			$count = $this->getLanguage()->formatNum( count( $jobs ) );
 			$out->addWikiMsg(