diff --git a/extension.json b/extension.json
index b6451ed..31bac83 100644
--- a/extension.json
+++ b/extension.json
@@ -15,7 +15,7 @@
 	},
 	"APIPropModules": {
 		"extracts": {
-			"class": "TextExtracts\\ApiQueryExtracts",
+			"class": "MediaWiki\\Extension\\TextExtracts\\ApiQueryExtracts",
 			"services": [
 				"ConfigFactory",
 				"MainWANObjectCache",
@@ -32,7 +32,7 @@
 		]
 	},
 	"AutoloadNamespaces": {
-		"TextExtracts\\": "includes/"
+		"MediaWiki\\Extension\\TextExtracts\\": "includes/"
 	},
 	"Hooks": {
 		"ApiOpenSearchSuggest": "main",
@@ -40,7 +40,7 @@
 	},
 	"HookHandlers": {
 		"main": {
-			"class": "TextExtracts\\Hooks",
+			"class": "MediaWiki\\Extension\\TextExtracts\\Hooks",
 			"services": [
 				"ConfigFactory"
 			]
diff --git a/includes/ApiQueryExtracts.php b/includes/ApiQueryExtracts.php
index 1508eff..a583df0 100644
--- a/includes/ApiQueryExtracts.php
+++ b/includes/ApiQueryExtracts.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace TextExtracts;
+namespace MediaWiki\Extension\TextExtracts;
 
 use ApiBase;
 use ApiQueryBase;
diff --git a/includes/ExtractFormatter.php b/includes/ExtractFormatter.php
index f755ae4..2612573 100644
--- a/includes/ExtractFormatter.php
+++ b/includes/ExtractFormatter.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace TextExtracts;
+namespace MediaWiki\Extension\TextExtracts;
 
 use DOMElement;
 use HtmlFormatter\HtmlFormatter;
diff --git a/includes/Hooks.php b/includes/Hooks.php
index f181e59..a7f4817 100644
--- a/includes/Hooks.php
+++ b/includes/Hooks.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace TextExtracts;
+namespace MediaWiki\Extension\TextExtracts;
 
 use ApiMain;
 use ApiResult;
diff --git a/includes/TextTruncator.php b/includes/TextTruncator.php
index ecb88b1..c89bacc 100644
--- a/includes/TextTruncator.php
+++ b/includes/TextTruncator.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace TextExtracts;
+namespace MediaWiki\Extension\TextExtracts;
 
 use MediaWiki\MediaWikiServices;
 
diff --git a/tests/phpunit/ApiQueryExtractsTest.php b/tests/phpunit/ApiQueryExtractsTest.php
index 39d862f..3a19f94 100644
--- a/tests/phpunit/ApiQueryExtractsTest.php
+++ b/tests/phpunit/ApiQueryExtractsTest.php
@@ -1,21 +1,21 @@
 <?php
 
-namespace TextExtracts\Test;
+namespace MediaWiki\Extension\TextExtracts\Test;
 
 use ILanguageConverter;
 use MediaWiki\Config\ConfigFactory;
 use MediaWiki\Config\HashConfig;
 use MediaWiki\Context\IContextSource;
+use MediaWiki\Extension\TextExtracts\ApiQueryExtracts;
 use MediaWiki\Languages\LanguageConverterFactory;
 use MediaWiki\Message\Message;
 use MediaWiki\Title\Title;
 use MediaWikiCoversValidator;
-use TextExtracts\ApiQueryExtracts;
 use Wikimedia\LightweightObjectStore\ExpirationAwareness;
 use Wikimedia\TestingAccessWrapper;
 
 /**
- * @covers \TextExtracts\ApiQueryExtracts
+ * @covers MediaWiki\Extension\TextExtracts\ApiQueryExtracts
  * @group TextExtracts
  *
  * @license GPL-2.0-or-later
diff --git a/tests/phpunit/ExtractFormatterTest.php b/tests/phpunit/ExtractFormatterTest.php
index 64c8ceb..35bc7d8 100644
--- a/tests/phpunit/ExtractFormatterTest.php
+++ b/tests/phpunit/ExtractFormatterTest.php
@@ -1,12 +1,12 @@
 <?php
 
-namespace TextExtracts\Test;
+namespace MediaWiki\Extension\TextExtracts\Test;
 
+use MediaWiki\Extension\TextExtracts\ExtractFormatter;
 use MediaWikiIntegrationTestCase;
-use TextExtracts\ExtractFormatter;
 
 /**
- * @covers \TextExtracts\ExtractFormatter
+ * @covers MediaWiki\Extension\TextExtracts\ExtractFormatter
  * @group TextExtracts
  *
  * @license GPL-2.0-or-later
diff --git a/tests/phpunit/TextTruncatorTest.php b/tests/phpunit/TextTruncatorTest.php
index fb116f4..873e854 100644
--- a/tests/phpunit/TextTruncatorTest.php
+++ b/tests/phpunit/TextTruncatorTest.php
@@ -1,11 +1,11 @@
 <?php
 
-namespace TextExtracts\Test;
+namespace MediaWiki\Extension\TextExtracts\Test;
 
-use TextExtracts\TextTruncator;
+use MediaWiki\Extension\TextExtracts\TextTruncator;
 
 /**
- * @covers \TextExtracts\TextTruncator
+ * @covers MediaWiki\Extension\TextExtracts\TextTruncator
  * @group TextExtracts
  *
  * @license GPL-2.0-or-later