diff --git a/config/initializers/content_security_policy.rb b/config/initializers/content_security_policy.rb
index 1308f0fd1d..6d7666c48e 100644
--- a/config/initializers/content_security_policy.rb
+++ b/config/initializers/content_security_policy.rb
@@ -4,6 +4,16 @@
 
 if Rails.env.production?
   assets_host = Rails.configuration.action_controller.asset_host || "https://#{ENV['WEB_DOMAIN'] || ENV['LOCAL_DOMAIN']}"
+  data_hosts = [assets_host]
+
+  if ENV['S3_ENABLED'] == 'true'
+    attachments_host = ENV['S3_ALIAS_HOST'] || ENV['S3_CLOUDFRONT_HOST'] || ENV['S3_HOSTNAME'] || "s3-#{ENV['S3_REGION'] || 'us-east-1'}.amazonaws.com"
+  elsif ENV['SWIFT_ENABLED'] == 'true'
+    attachments_host = ENV['SWIFT_OBJECT_URL']
+  else
+    attachments_host = nil
+  end
+  data_hosts << attachments_host unless attachments_host.nil?
 
   Rails.application.config.content_security_policy do |p|
     p.base_uri        :none
@@ -13,9 +23,10 @@ if Rails.env.production?
     p.font_src        :self, assets_host
     p.img_src         :self, :https, :data, :blob
     p.style_src       :self, :unsafe_inline, assets_host
-    p.media_src       :self, :data, assets_host
+    p.media_src       :self, :data, *data_hosts
     p.frame_src       :self, :https
-    p.connect_src     :self, :blob, assets_host, Rails.configuration.x.streaming_api_base_url
+    p.worker_src      :self, assets_host
+    p.connect_src     :self, :blob, Rails.configuration.x.streaming_api_base_url, *data_hosts
   end
 end