diff --git a/matchplay.php b/matchplay.php
index 1697df7..9b22cb5 100644
--- a/matchplay.php
+++ b/matchplay.php
@@ -28,7 +28,7 @@ function create_block_matchplay_block_init(): void {
 
 
 add_action( 'admin_init', 'matchplay_register_settings' );
-function matchplay_register_settings() {
+function matchplay_register_settings(): void {
 	register_setting( 'matchplay', 'matchplay_options' );
 
 	add_settings_section(
@@ -48,7 +48,7 @@ function matchplay_register_settings() {
 	);
 }
 
-function matchplay_field_api_key_callback( $args ) {
+function matchplay_field_api_key_callback( $args ): void {
 	$options = get_option( 'matchplay_options' );
 	?>
 	<input
@@ -60,7 +60,7 @@ function matchplay_field_api_key_callback( $args ) {
 
 
 add_action( 'admin_menu', 'matchplay_options_page' );
-function matchplay_options_page() {
+function matchplay_options_page(): void {
 	add_options_page(
 		'Matchplay Settings',
 		'Matchplay Settings',
@@ -68,10 +68,9 @@ function matchplay_options_page() {
 		'matchplay',
 		'matchplay_settings_page_html'
 	);
-
 }
 
-function matchplay_settings_page_html() {
+function matchplay_settings_page_html(): void {
 	// check user capabilities
 	if ( ! current_user_can( 'manage_options' ) ) return;