diff --git a/src/Config/Configuration.php b/src/Config/Configuration.php
index 235b5fad..25606dbe 100644
--- a/src/Config/Configuration.php
+++ b/src/Config/Configuration.php
@@ -15,6 +15,7 @@ class Configuration implements IConfiguration
 
     private ?ILoggerFactory $loggerFactory;
     private ?ITransportStrategy $transportStrategy;
+    protected static int $maxIdleMillis = 4 * 60 * 1000;
 
     public function __construct(?ILoggerFactory $loggerFactory, ?ITransportStrategy $transportStrategy)
     {
diff --git a/src/Config/Configurations/InRegion.php b/src/Config/Configurations/InRegion.php
index ab47d9ac..46e76ab7 100644
--- a/src/Config/Configurations/InRegion.php
+++ b/src/Config/Configurations/InRegion.php
@@ -9,15 +9,12 @@
 use Momento\Logging\ILoggerFactory;
 use Momento\Logging\NullLoggerFactory;
 
-const MAX_IDLE_MILLIS = 4 * 60 * 1000;
-
 /**
  * InRegion provides defaults suitable for an environment where your client is running in the same region as the Momento
  * service.  It has more aggressive timeouts and retry behavior than the Laptop config.
  */
 class InRegion extends Configuration
 {
-
     /**
      * Provides the latest recommended configuration for an InRegion environment.
      * This configuration may change in future releases to take advantage of
@@ -42,8 +39,7 @@ public static function v1(?ILoggerFactory $loggerFactory = null): Laptop
     {
         $loggerFactory = $loggerFactory ?? new NullLoggerFactory();
         $grpcConfig = new StaticGrpcConfiguration(1100);
-        $transportStrategy = new StaticTransportStrategy(null, $grpcConfig, $loggerFactory, MAX_IDLE_MILLIS);
+        $transportStrategy = new StaticTransportStrategy(null, $grpcConfig, $loggerFactory, self::$maxIdleMillis);
         return new Laptop($loggerFactory, $transportStrategy);
     }
-
 }
diff --git a/src/Config/Configurations/Laptop.php b/src/Config/Configurations/Laptop.php
index 81a07174..c1402e53 100644
--- a/src/Config/Configurations/Laptop.php
+++ b/src/Config/Configurations/Laptop.php
@@ -9,15 +9,12 @@
 use Momento\Logging\ILoggerFactory;
 use Momento\Logging\NullLoggerFactory;
 
-const MAX_IDLE_MILLIS = 4 * 60 * 1000;
-
 /**
  * Laptop config provides defaults suitable for a medium-to-high-latency dev environment.  Permissive timeouts, retries, and
  * relaxed latency and throughput targets.
  */
 class Laptop extends Configuration
 {
-
     /**
      * Provides the latest recommended configuration for a Laptop environment.
      *
@@ -40,8 +37,7 @@ public static function v1(?ILoggerFactory $loggerFactory = null): Laptop
     {
         $loggerFactory = $loggerFactory ?? new NullLoggerFactory();
         $grpcConfig = new StaticGrpcConfiguration(5000);
-        $transportStrategy = new StaticTransportStrategy(null, $grpcConfig, $loggerFactory, MAX_IDLE_MILLIS);
+        $transportStrategy = new StaticTransportStrategy(null, $grpcConfig, $loggerFactory, self::$maxIdleMillis);
         return new Laptop($loggerFactory, $transportStrategy);
     }
-
 }