diff --git a/config/initializers/paperclip.rb b/config/initializers/paperclip.rb
index df0205879c43c8b3f2172470c78f580b1611a889..4bbf8b827b54aa23a5997edf383015684b70f3ba 100644
--- a/config/initializers/paperclip.rb
+++ b/config/initializers/paperclip.rb
@@ -25,7 +25,7 @@ if ENV['S3_ENABLED'] == 'true'
     s3_protocol: s3_protocol,
     s3_host_name: s3_hostname,
     s3_headers: {
-      'Cache-Control' => 'max-age=315576000',
+      'Cache-Control' => 'public, max-age=315576000, immutable',
     },
     s3_permissions: ENV.fetch('S3_PERMISSION') { 'public-read' },
     s3_region: s3_region,