diff --git a/lib/redis/connection/memory.rb b/lib/redis/connection/memory.rb
index 4c7b7ea..951eceb 100644
--- a/lib/redis/connection/memory.rb
+++ b/lib/redis/connection/memory.rb
@@ -14,7 +14,7 @@
 
 class Redis
   module Connection
-    DEFAULT_REDIS_VERSION = '3.3.5'
+    DEFAULT_REDIS_VERSION = '5.0.9'
 
     class Memory
       include Redis::Connection::CommandHelper