diff --git a/lib/puma/plugin/statsd.rb b/lib/puma/plugin/statsd.rb
index fdebc55..51af776 100644
--- a/lib/puma/plugin/statsd.rb
+++ b/lib/puma/plugin/statsd.rb
@@ -117,11 +117,13 @@ def register_hooks
     in_background(&method(:stats_loop))
   end
 
-  def fetch_stats
-    stats = Puma.stats
-    if stats.is_a?(Hash)
-      stats
-    else
+  if Puma.respond_to?(:stats_hash)
+    def fetch_stats
+      Puma.stats_hash
+    end
+  else
+    def fetch_stats
+      stats = Puma.stats
       JSON.parse(stats, symbolize_names: true)
     end
   end