diff --git a/config/initializers/content_security_policy.rb b/config/initializers/content_security_policy.rb
index d03d47d717..bfd680af85 100644
--- a/config/initializers/content_security_policy.rb
+++ b/config/initializers/content_security_policy.rb
@@ -6,11 +6,12 @@
 
 Rails.application.config.content_security_policy do |policy|
   policy.default_src :self, :https
-  policy.font_src    :self, :https, :data, 'fonts.gstatic.com'
-  policy.img_src     :self, :https, :data, '*.s3.amazonaws.com'
-  policy.object_src  :none
-  policy.script_src  :self, :https, :unsafe_inline, "*.stripe.com", "openfoodnetwork.innocraft.cloud"
-  policy.style_src   :self, :https, :unsafe_inline
+  policy.font_src :self, :https, :data, 'fonts.gstatic.com'
+  policy.img_src :self, :https, :data, '*.s3.amazonaws.com'
+  policy.object_src :none
+  policy.frame_ancestors :none
+  policy.script_src :self, :https, :unsafe_inline, "*.stripe.com", "openfoodnetwork.innocraft.cloud"
+  policy.style_src :self, :https, :unsafe_inline
   policy.connect_src :self, :https, "http://localhost:3035", "ws://localhost:3035" if Rails.env.development?
 
   # Specify URI for violation reports