diff --git a/site-cookbooks/kosmos-mastodon/attributes/default.rb b/site-cookbooks/kosmos-mastodon/attributes/default.rb
index 9d99cea..eb91556 100644
--- a/site-cookbooks/kosmos-mastodon/attributes/default.rb
+++ b/site-cookbooks/kosmos-mastodon/attributes/default.rb
@@ -4,6 +4,8 @@ node.default["kosmos-mastodon"]["streaming_port"]  = 4000
 node.default["kosmos-mastodon"]["server_name"]     = "kosmos.social"
 node.default["kosmos-mastodon"]["redis_url"]       = "redis://localhost:6379/1"
 node.default["kosmos-mastodon"]["sidekiq_threads"] = 25
+# Allocate this amount of RAM to the Java heap for Elasticsearch
+node.default["kosmos-mastodon"]["elasticsearch"]["allocated_memory"] = "1536m"
 
 node.override["tor"]["HiddenServices"]["mastodon"] = {
   "HiddenServicePorts" => ["80 127.0.0.1:80"]
diff --git a/site-cookbooks/kosmos-mastodon/recipes/default.rb b/site-cookbooks/kosmos-mastodon/recipes/default.rb
index 0e4dba9..a752a50 100644
--- a/site-cookbooks/kosmos-mastodon/recipes/default.rb
+++ b/site-cookbooks/kosmos-mastodon/recipes/default.rb
@@ -36,7 +36,7 @@ elasticsearch_install 'elasticsearch' do
 end
 
 elasticsearch_configure 'elasticsearch' do
-  allocated_memory '1536m'
+  allocated_memory node["kosmos-mastodon"]["elasticsearch"]["allocated_memory"]
 end
 
 elasticsearch_service 'elasticsearch'