diff --git a/files/class-vip-filesystem.php b/files/class-vip-filesystem.php
index ac51a04b76..a2031341e9 100644
--- a/files/class-vip-filesystem.php
+++ b/files/class-vip-filesystem.php
@@ -100,6 +100,7 @@ private function add_filters() {
 		add_filter( 'get_attached_file', [ $this, 'filter_get_attached_file' ], 20 );
 		add_filter( 'wp_generate_attachment_metadata', [ $this, 'filter_wp_generate_attachment_metadata' ], 10, 2 );
 		add_filter( 'wp_read_image_metadata', [ $this, 'filter_wp_read_image_metadata' ], 10, 2 );
+		add_filter( 'font_dir', [ $this, 'filter_wp_font_dir' ], 10, 1 );
 
 		/**
 		 * The core's function recurse_dirsize would call to opendir() which is not supported by the
@@ -124,6 +125,7 @@ private function remove_filters() {
 		remove_filter( 'get_attached_file', [ $this, 'filter_get_attached_file' ], 20 );
 		remove_filter( 'wp_generate_attachment_metadata', [ $this, 'filter_wp_generate_attachment_metadata' ] );
 		remove_filter( 'wp_read_image_metadata', [ $this, 'filter_wp_read_image_metadata' ], 10, 2 );
+		remove_filter( 'font_dir', [ $this, 'filter_wp_font_dir' ], 10, 1 );
 		remove_filter( 'pre_recurse_dirsize', '__return_zero' );
 	}
 
@@ -461,4 +463,18 @@ public function filter_wp_read_image_metadata( $meta, $file ) {
 
 		return $meta;
 	}
+
+	/**
+	 * Changes the Font Library directory to work with the VIP Filesystem.
+	 */
+	public function filter_wp_font_dir( $defaults ) {
+		$upload_dir = wp_upload_dir();
+	
+		$defaults['basedir'] = $upload_dir['basedir'] . '/fonts';
+		$defaults['baseurl'] = $upload_dir['baseurl'] . '/fonts';
+		$defaults['path']    = $defaults['basedir'];
+		$defaults['url']     = $defaults['baseurl'];
+	
+		return $defaults;
+	}
 }
diff --git a/tests/files/test-vip-filesystem.php b/tests/files/test-vip-filesystem.php
index fe0250b45f..c23692bd69 100644
--- a/tests/files/test-vip-filesystem.php
+++ b/tests/files/test-vip-filesystem.php
@@ -29,8 +29,8 @@ class VIP_Filesystem_Test extends WP_UnitTestCase {
 
 	public static function configure_constant_mocker(): void {
 		Constant_Mocker::clear();
-		define( 'LOCAL_UPLOADS', '/wp/uploads' );
-		define( 'WP_CONTENT_DIR', '/wp/wordpress/wp-content' );
+		define( 'LOCAL_UPLOADS', '/tmp/uploads' );
+		define( 'WP_CONTENT_DIR', '/tmp/wordpress/wp-content' );
 	}
 
 	public function setUp(): void {
@@ -386,4 +386,23 @@ public function data_get_transport_for_path(): iterable {
 			[ constant( 'WP_CONTENT_DIR' ) . '/languages/test.txt', 'direct' ],
 		];
 	}
+
+	public function test_wp_font_dir() {
+		// Only available in WP 6.5 and newer:
+		if ( ! function_exists( '\wp_get_font_dir' ) ) {
+			$this->markTestSkipped( 'test_wp_font_dir does not need to run for WP < 6.5.' );
+			return;
+		}
+
+		$font_dir = \wp_get_font_dir();
+
+		$this->assertEquals( $font_dir, [
+			'path'    => 'vip://wp-content/uploads/fonts',
+			'basedir' => 'vip://wp-content/uploads/fonts',
+			'url'     => 'http://example.org/wp-content/uploads/fonts',
+			'baseurl' => 'http://example.org/wp-content/uploads/fonts',
+			'subdir'  => '',
+			'error'   => false,
+		] );
+	}
 }