diff --git a/priv/repo/migrations/20260603124900_add_site_annotations_feature_to_enterprise_plans.exs b/priv/repo/migrations/20260603124900_add_site_annotations_feature_to_enterprise_plans.exs
new file mode 100644
index 000000000000..71ffe39e48a7
--- /dev/null
+++ b/priv/repo/migrations/20260603124900_add_site_annotations_feature_to_enterprise_plans.exs
@@ -0,0 +1,20 @@
+defmodule Plausible.Repo.Migrations.AddSiteAnnotationsFeatureToEnterprisePlans do
+  use Ecto.Migration
+
+  def up do
+    execute """
+    UPDATE enterprise_plans
+    SET features = array_append(features, 'site_annotations')
+    WHERE features @> ARRAY['props', 'stats_api', 'funnels', 'revenue_goals']::varchar[]
+      AND NOT (features @> ARRAY['site_annotations']::varchar[])
+    """
+  end
+
+  def down do
+    execute """
+    UPDATE enterprise_plans
+    SET features = array_remove(features, 'site_annotations')
+    WHERE features @> ARRAY['props', 'stats_api', 'funnels', 'revenue_goals', 'site_annotations']::varchar[]
+    """
+  end
+end