diff --git a/extension.json b/extension.json
index f47ca13c6..fe67eb12a 100644
--- a/extension.json
+++ b/extension.json
@@ -13,7 +13,7 @@
 	"license-name": "GPL-2.0-or-later",
 	"type": "parserhook",
 	"requires": {
-		"MediaWiki": ">= 1.36.0"
+		"MediaWiki": ">= 1.39.0"
 	},
 	"AutoloadNamespaces": {
 		"MediaWiki\\Extension\\Math\\": "src/"
diff --git a/src/MathChemSymbolsDataModule.php b/src/MathChemSymbolsDataModule.php
index ccc836373..41ef30837 100644
--- a/src/MathChemSymbolsDataModule.php
+++ b/src/MathChemSymbolsDataModule.php
@@ -2,8 +2,7 @@
 
 namespace MediaWiki\Extension\Math;
 
-use ResourceLoaderContext;
-use ResourceLoaderModule;
+use MediaWiki\ResourceLoader as RL;
 
 /**
  * Resource loader module providing extra data from the server to Chem.
@@ -11,18 +10,18 @@ use ResourceLoaderModule;
  * @copyright 2011-2015 VisualEditor Team and others; see AUTHORS.txt
  * @license MIT
  */
-class MathChemSymbolsDataModule extends ResourceLoaderModule {
+class MathChemSymbolsDataModule extends RL\Module {
 
 	/** @inheritDoc */
 	protected $targets = [ 'desktop', 'mobile' ];
 
-	public function getScript( ResourceLoaderContext $context ) {
+	public function getScript( RL\Context $context ) {
 		return 've.ui.MWChemDialog.static.setSymbols(' .
 				file_get_contents( __DIR__ . '/../modules/ve-math/chemSymbols.json' ) .
 				');';
 	}
 
-	public function getDependencies( ResourceLoaderContext $context = null ) {
+	public function getDependencies( RL\Context $context = null ) {
 		return [
 			'ext.math.visualEditor',
 		];
diff --git a/src/MathMathSymbolsDataModule.php b/src/MathMathSymbolsDataModule.php
index dbfbfbeed..60a2558b9 100644
--- a/src/MathMathSymbolsDataModule.php
+++ b/src/MathMathSymbolsDataModule.php
@@ -2,8 +2,7 @@
 
 namespace MediaWiki\Extension\Math;
 
-use ResourceLoaderContext;
-use ResourceLoaderModule;
+use MediaWiki\ResourceLoader as RL;
 
 /**
  * Resource loader module providing extra data from the server to Math.
@@ -11,18 +10,18 @@ use ResourceLoaderModule;
  * @copyright 2011-2015 VisualEditor Team and others; see AUTHORS.txt
  * @license MIT
  */
-class MathMathSymbolsDataModule extends ResourceLoaderModule {
+class MathMathSymbolsDataModule extends RL\Module {
 
 	/** @inheritDoc */
 	protected $targets = [ 'desktop', 'mobile' ];
 
-	public function getScript( ResourceLoaderContext $context ) {
+	public function getScript( RL\Context $context ) {
 		return 've.ui.MWMathDialog.static.setSymbols(' .
 				file_get_contents( __DIR__ . '/../modules/ve-math/mathSymbols.json' ) .
 				');';
 	}
 
-	public function getDependencies( ResourceLoaderContext $context = null ) {
+	public function getDependencies( RL\Context $context = null ) {
 		return [
 			'ext.math.visualEditor',
 		];