diff --git a/config/initializers/content_security_policy.rb b/config/initializers/content_security_policy.rb
index 636b9d479f2ca5780f99e944beac6e84aaac45a8..fbd18d8b939ab5b8b0c6e6a7e38f0e9167c8418d 100644
--- a/config/initializers/content_security_policy.rb
+++ b/config/initializers/content_security_policy.rb
@@ -6,7 +6,9 @@
 
 Rails.application.configure do
 
-  style_urls = %w()
+  style_urls = %w(
+    https://example.osuny.org/assets/css/
+  )
   img_urls = %w()
   script_urls = %w(
     https://example.osuny.org/js/