diff --git a/.env.production.sample b/.env.production.sample
index 28afee246c8b0900d4d0c58ed20af0aa5ad29511..16ffd0803cf1ed19535cb5c8cbdb9894e5f87e2b 100644
--- a/.env.production.sample
+++ b/.env.production.sample
@@ -74,6 +74,7 @@ SMTP_FROM_ADDRESS=notifications@example.com
 # S3_PROTOCOL=https
 # S3_HOSTNAME=
 # S3_ENDPOINT=
+# S3_SIGNATURE_VERSION=
 
 # Optional alias for S3 if you want to use Cloudfront or Cloudflare in front
 # S3_CLOUDFRONT_HOST=
diff --git a/config/initializers/paperclip.rb b/config/initializers/paperclip.rb
index ffaa2566e1cefb6b155a53c9b6325ec529bddec9..af65ca818865d577a22c9ce41caff665db20f24e 100644
--- a/config/initializers/paperclip.rb
+++ b/config/initializers/paperclip.rb
@@ -28,6 +28,7 @@ if ENV['S3_ENABLED'] == 'true'
   unless ENV['S3_ENDPOINT'].blank?
     Paperclip::Attachment.default_options[:s3_options] = {
       endpoint: ENV['S3_ENDPOINT'],
+      signature_version: ENV['S3_SIGNATURE_VERSION'] || 'v4',
       force_path_style: true,
     }