diff --git a/src/LaunchDarkly/Impl/Integrations/GuzzleFeatureRequester.php b/src/LaunchDarkly/Impl/Integrations/GuzzleFeatureRequester.php
index 51074f354..9b7fe7f94 100644
--- a/src/LaunchDarkly/Impl/Integrations/GuzzleFeatureRequester.php
+++ b/src/LaunchDarkly/Impl/Integrations/GuzzleFeatureRequester.php
@@ -5,6 +5,7 @@
 use GuzzleHttp\Exception\BadResponseException;
 use GuzzleHttp\HandlerStack;
 use Kevinrob\GuzzleCache\CacheMiddleware;
+use Kevinrob\GuzzleCache\Strategy\CacheStrategyInterface;
 use Kevinrob\GuzzleCache\Strategy\PublicCacheStrategy;
 use LaunchDarkly\FeatureFlag;
 use LaunchDarkly\FeatureRequester;
@@ -35,7 +36,10 @@ public function __construct($baseUri, $sdkKey, $options)
         $this->_logger = $options['logger'];
         $stack = HandlerStack::create();
         if (class_exists('Kevinrob\GuzzleCache\CacheMiddleware')) {
-            $stack->push(new CacheMiddleware(new PublicCacheStrategy(isset($options['cache']) ? $options['cache'] : null)), 'cache');
+            $cacheOption = isset($options['cache']) ? $options['cache'] : null;
+            $cacheOption instanceof CacheStrategyInterface
+                ? $stack->push(new CacheMiddleware($cacheOption), 'cache')
+                : $stack->push(new CacheMiddleware(new PublicCacheStrategy($cacheOption)), 'cache');
         } elseif (!$this->_loggedCacheNotice) {
             $this->_logger->info("GuzzleFeatureRequester is not using an HTTP cache because Kevinrob\GuzzleCache\CacheMiddleware was not installed");
             $this->_loggedCacheNotice = true;