diff --git a/manifests/init.pp b/manifests/init.pp
index db31142d..5f0a250a 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -672,6 +672,8 @@ class horizon(
 
   if $manage_memcache_package {
     if $cache_backend =~ /\.MemcachedCache$/ {
+      warning("Support for MemcachedCache backend has been deprecated. \
+Use PyMemcacheCache backend instead")
       ensure_packages('python-memcache', {
         name => $::horizon::params::memcache_package,
         tag  => ['openstack'],
diff --git a/releasenotes/notes/deprecate-memcache-backend-ce0b3304e4842cae.yaml b/releasenotes/notes/deprecate-memcache-backend-ce0b3304e4842cae.yaml
new file mode 100644
index 00000000..8bc3af67
--- /dev/null
+++ b/releasenotes/notes/deprecate-memcache-backend-ce0b3304e4842cae.yaml
@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    Support for the MemcachedCache backend has been deprecated. This backend
+    was deprecated in django 3.2 .