diff --git a/CHANGELOG.md b/CHANGELOG.md
index 19df3a47..467adf55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 - Added support for Relay
 - Minor UX fixes and improvements
 - Updated ApexCharts to v3.31.0
+- Fixed PHP 8.1 deprecation notice
 
 ## 2.0.22
 
diff --git a/includes/object-cache.php b/includes/object-cache.php
index eead831b..a31c648a 100644
--- a/includes/object-cache.php
+++ b/includes/object-cache.php
@@ -620,7 +620,7 @@ protected function connect_using_phpredis( $parameters ) {
                 'port' => $parameters['port'],
                 'timeout' => $parameters['timeout'],
                 '',
-                'retry_interval' => $parameters['retry_interval'],
+                'retry_interval' => (int) $parameters['retry_interval'],
             ];
 
             if ( strcasecmp( 'tls', $parameters['scheme'] ) === 0 ) {
@@ -690,7 +690,7 @@ protected function connect_using_relay( $parameters ) {
                 'port' => $parameters['port'],
                 'timeout' => $parameters['timeout'],
                 '',
-                'retry_interval' => $parameters['retry_interval'],
+                'retry_interval' => (int) $parameters['retry_interval'],
             ];
 
             if ( strcasecmp( 'tls', $parameters['scheme'] ) === 0 ) {