diff --git a/flux.yml b/flux.yml
index f7a8589..b16de39 100644
--- a/flux.yml
+++ b/flux.yml
@@ -247,7 +247,7 @@ spec:
     spec:
       containers:
       - name: memcached
-        image: memcached:1.5.20
+        image: memcached:1.5.21
         imagePullPolicy: IfNotPresent
         args:
         - -m 512   # Maximum memory to use, in megabytes