diff --git a/changelog.d/3-bug-fixes/elasticsearch-ephemeral-disable-auto-creation b/changelog.d/3-bug-fixes/elasticsearch-ephemeral-disable-auto-creation
new file mode 100644
index 0000000000..b0189061d7
--- /dev/null
+++ b/changelog.d/3-bug-fixes/elasticsearch-ephemeral-disable-auto-creation
@@ -0,0 +1 @@
+elasticsearch-ephemeral: Disable automatic creation of indices
diff --git a/charts/elasticsearch-ephemeral/templates/es.yaml b/charts/elasticsearch-ephemeral/templates/es.yaml
index 9c9f00fca9..1da1b21784 100644
--- a/charts/elasticsearch-ephemeral/templates/es.yaml
+++ b/charts/elasticsearch-ephemeral/templates/es.yaml
@@ -31,6 +31,8 @@ spec:
           value: "false"
         - name: "discovery.type"
           value: "single-node"
+        - name: "action.auto_create_index"
+          value: ".watches,.triggered_watches,.watcher-history-*"
         ports:
         - containerPort: 9200
           name: http