diff --git a/includes/Menu/Group.php b/includes/Menu/Group.php
index 14a059050..313e43ea2 100644
--- a/includes/Menu/Group.php
+++ b/includes/Menu/Group.php
@@ -130,7 +130,7 @@ final class Group {
 
 	/**
 	 * Insert an entry after an existing one.
-	 *
+	 * @deprecated since 1.39
 	 * @param string $targetName The name of the existing entry to insert
 	 *  the new entry after
 	 * @param string $name The name of the new entry
@@ -143,7 +143,9 @@ final class Group {
 	 * @throws DomainException When the existing entry doesn't exist
 	 */
 	public function insertAfter( $targetName, $name, $text, $url,
-			$className = '', $icon = null, $trackable = false, $isJSOnly = false ) {
+			$className = '', $icon = null, $trackable = false, $isJSOnly = false
+	) {
+		wfDeprecated( __METHOD__, '1.39' );
 		$this->throwIfNotUnique( $name );
 		$index = $this->search( $targetName );
 
diff --git a/tests/phpunit/menu/GroupTest.php b/tests/phpunit/menu/GroupTest.php
index afab77626..76c630169 100644
--- a/tests/phpunit/menu/GroupTest.php
+++ b/tests/phpunit/menu/GroupTest.php
@@ -77,131 +77,6 @@ class GroupTest extends MediaWikiIntegrationTestCase {
 		$this->assertTrue( $menu->hasEntries() );
 	}
 
-	/**
-	 * @covers ::insertEntry
-	 * @covers ::search
-	 * @covers ::getEntries
-	 * @covers ::insertAfter
-	 */
-	public function testInsertingAnEntryAfterAnother() {
-		$menu = new Group( 'p-test' );
-		$entryHome = SingleMenuEntry::create(
-			'home',
-			$this->homeComponent['text'],
-			$this->homeComponent['href'],
-			$this->homeComponent['class'],
-			$this->homeComponent['icon'],
-			true
-		);
-		$menu->insertEntry( $entryHome );
-
-		$entryOtherHome = SingleMenuEntry::create(
-			'another_home',
-			$this->homeComponent['text'],
-			$this->homeComponent['href'],
-			$this->homeComponent['class'],
-			$this->homeComponent['icon'],
-			true
-		);
-		$menu->insertEntry( $entryOtherHome );
-		$menu->insertAfter(
-			'home',
-			'nearby',
-			$this->nearbyComponent['text'],
-			$this->nearbyComponent['href'],
-			$this->nearbyComponent['class'],
-			$this->nearbyComponent['icon']
-		);
-
-		$expectedEntries = [
-			[
-				'name' => 'home',
-				'components' => [
-					[
-						'text' => $this->homeComponent['text'],
-						'href' => $this->homeComponent['href'],
-						'class' => 'mw-ui-icon mw-ui-icon-before mw-ui-icon-home menu__item--home',
-						'icon' => 'minerva-home',
-						'data-event-name' => 'menu.home'
-					]
-				],
-			],
-			[
-				'name' => 'nearby',
-				'components' => [
-					[
-						'text' => $this->nearbyComponent['text'],
-						'href' => $this->nearbyComponent['href'],
-						'class' => 'mw-ui-icon mw-ui-icon-before mw-ui-icon-nearby menu__item--nearby',
-						'icon' => 'minerva-nearby'
-					]
-				],
-			],
-			[
-				'name' => 'another_home',
-				'components' => [
-					[
-						'text' => $this->homeComponent['text'],
-						'href' => $this->homeComponent['href'],
-						'class' => 'mw-ui-icon mw-ui-icon-before mw-ui-icon-home menu__item--another_home',
-						'icon' => 'minerva-another_home',
-						'data-event-name' => 'menu.another_home'
-					]
-				],
-			],
-		];
-
-		$this->assertEquals( $expectedEntries, $menu->getEntries() );
-	}
-
-	/**
-	 * @covers ::insertAfter
-	 * @covers ::search
-	 */
-	public function testInsertAfterWhenTargetEntryDoesntExist() {
-		$menu = new Group( 'p-test' );
-		$this->expectException( DomainException::class );
-		$this->expectExceptionMessage( 'The "home" entry doesn\'t exist.' );
-		$menu->insertAfter(
-				'home',
-				'nearby',
-				$this->nearbyComponent['text'],
-				$this->nearbyComponent['href'],
-				$this->nearbyComponent['class'],
-				$this->nearbyComponent['icon']
-			);
-	}
-
-	/**
-	 * @covers ::insertAfter
-	 */
-	public function testInsertAfterWithAnEntryWithAnExistingName() {
-		$menu = new Group( 'p-test' );
-		$entryHome = SingleMenuEntry::create(
-			'home',
-			$this->homeComponent['text'],
-			$this->homeComponent['href'],
-			$this->homeComponent['class']
-		);
-		$menu->insertEntry( $entryHome );
-		$entryCar = SingleMenuEntry::create(
-			'car',
-			$this->homeComponent['text'],
-			$this->homeComponent['href'],
-			$this->homeComponent['class']
-		);
-		$menu->insertEntry( $entryCar );
-		$this->expectException( DomainException::class );
-		$this->expectExceptionMessage( 'The "car" entry already exists.' );
-		$menu->insertAfter(
-			'home',
-			'car',
-			$this->homeComponent['text'],
-			$this->homeComponent['href'],
-			$this->homeComponent['class']
-		);
-	}
-
 	/**
 	 * @covers ::insertEntry
 	 */
@@ -219,42 +94,6 @@ class GroupTest extends MediaWikiIntegrationTestCase {
 		$menu->insertEntry( $entryHome );
 	}
 
-	/**
-	 * @covers ::insertEntry
-	 * @covers ::insertAfter
-	 */
-	public function testInsertingAnEntryAfterAnotherOne() {
-		$menu = new Group( 'p-test' );
-		$entryFirst = SingleMenuEntry::create(
-			'first',
-			$this->homeComponent['text'],
-			$this->homeComponent['href'],
-			$this->homeComponent['class']
-		);
-		$menu->insertEntry( $entryFirst );
-
-		$entryLast = SingleMenuEntry::create(
-			'last',
-			$this->homeComponent['text'],
-			$this->homeComponent['href'],
-			$this->homeComponent['class']
-		);
-		$menu->insertEntry( $entryLast );
-		$menu->insertAfter(
-			'first',
-			'middle',
-			$this->nearbyComponent['text'],
-			$this->nearbyComponent['href'],
-			$this->nearbyComponent['class'],
-			$this->nearbyComponent['icon']
-		);
-		$items = $menu->getEntries();
-		$this->assertCount( 3, $items );
-		$this->assertSame( 'first', $items[0]['name'] );
-		$this->assertSame( 'middle', $items[1]['name'] );
-		$this->assertSame( 'last', $items[2]['name'] );
-	}
-
 	/**
 	 * @covers ::insertEntry
 	 * @covers ::getEntries