Introduce version parameter
diff --git a/metadata/service/server/single.yml b/metadata/service/server/single.yml
index 100c5f6..bd64b14 100644
--- a/metadata/service/server/single.yml
+++ b/metadata/service/server/single.yml
@@ -4,6 +4,7 @@
   redis:
     server:
       enabled: true
+      version: 2.8
       bind:
         address: 0.0.0.0
         port: 6379