diff --git a/config/initializers/content_security_policy.rb b/config/initializers/content_security_policy.rb
index 73fbf5890a..9a584f2850 100644
--- a/config/initializers/content_security_policy.rb
+++ b/config/initializers/content_security_policy.rb
@@ -14,7 +14,12 @@ Rails.application.config.content_security_policy do |policy|
   policy.script_src :self, :https, :unsafe_inline, :unsafe_eval, "*.stripe.com", "openfoodnetwork.innocraft.cloud",
                     "maps.googleapis.com", "maps.gstatic.com", "d2wy8f7a9ursnm.cloudfront.net"
   policy.style_src :self, :https, :unsafe_inline, "fonts.googleapis.com", "cdnjs.cloudflare.com"
-  policy.connect_src :self, :https, "http://localhost:3035", "ws://localhost:3035" if Rails.env.development?
+
+  if Rails.env.development?
+    policy.connect_src :self, :https, "http://localhost:3035", "ws://localhost:3035", "ws://localhost:3000"
+  else
+    policy.connect_src :self, :https, "https://#{ENV["SITE_URL"]}", "wss://#{ENV["SITE_URL"]}"
+  end
 
   # Specify URI for violation reports
   # policy.report_uri "/csp-violation-report-endpoint"