diff --git a/Gemfile b/Gemfile
index 8bf19fd3b..b52a299cd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,6 +25,7 @@ gem 'validates_email_format_of', '1.6.3' # validates email against RFC 2822 and
 gem 'paper_trail',
   github: 'airblade/paper_trail',
   ref: 'a453811226ec4ea59753ba6b827e390ced2fc140'
+# NB! if this gets upgraded, ensure Setting.reload_settings! still works correctly
 gem 'rails-settings-cached',     '0.4.1' # for settings
 
 # html-xml
diff --git a/app/models/setting.rb b/app/models/setting.rb
index 005cce626..4a66df3a9 100644
--- a/app/models/setting.rb
+++ b/app/models/setting.rb
@@ -1,3 +1,7 @@
 class Setting < RailsSettings::CachedSettings
   include Versions # version/setting_version.rb
+
+  def self.reload_settings!
+    Rails.cache.delete_matched('settings:.*')
+  end
 end