diff --git a/CHANGELOG.md b/CHANGELOG.md
index 74d5d040..e45d0024 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,13 @@
 Changelog
 =========
 
+## v6.28.1 (TBD)
+
+### Fixes
+
+* Amend secondary instance URL to bugsnag.smartbear.com
+  | [#845](https://github.com/bugsnag/bugsnag-ruby/pull/845)
+
 ## v6.28.0 (8 July 2025)
 
 ### Enhancements
diff --git a/VERSION b/VERSION
index 2ece8e17..8993da97 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-6.28.0
+6.28.1
diff --git a/lib/bugsnag.rb b/lib/bugsnag.rb
index b3c530cc..6edf920b 100644
--- a/lib/bugsnag.rb
+++ b/lib/bugsnag.rb
@@ -526,10 +526,10 @@ def check_key_valid
     def check_endpoint_setup
       notify_set = configuration.notify_endpoint &&
                    configuration.notify_endpoint != Bugsnag::Configuration::DEFAULT_NOTIFY_ENDPOINT &&
-                   configuration.notify_endpoint != Bugsnag::Configuration::HUB_NOTIFY_ENDPOINT
+                   configuration.notify_endpoint != Bugsnag::Configuration::SECONDARY_NOTIFY_ENDPOINT
       session_set = configuration.session_endpoint &&
                     configuration.session_endpoint != Bugsnag::Configuration::DEFAULT_SESSION_ENDPOINT &&
-                    configuration.session_endpoint != Bugsnag::Configuration::HUB_SESSION_ENDPOINT
+                    configuration.session_endpoint != Bugsnag::Configuration::SECONDARY_SESSION_ENDPOINT
       if notify_set && !session_set
         configuration.warn("The session endpoint has not been set, all further session capturing will be disabled")
         configuration.disable_sessions
diff --git a/lib/bugsnag/configuration.rb b/lib/bugsnag/configuration.rb
index 86440e42..050305b8 100644
--- a/lib/bugsnag/configuration.rb
+++ b/lib/bugsnag/configuration.rb
@@ -199,9 +199,9 @@ class Configuration
 
     DEFAULT_NOTIFY_ENDPOINT = "https://notify.bugsnag.com"
     DEFAULT_SESSION_ENDPOINT = "https://sessions.bugsnag.com"
-    HUB_NOTIFY_ENDPOINT = "https://notify.insighthub.smartbear.com"
-    HUB_SESSION_ENDPOINT = "https://sessions.insighthub.smartbear.com"
-    HUB_PREFIX = "00000"
+    SECONDARY_NOTIFY_ENDPOINT = "https://notify.bugsnag.smartbear.com"
+    SECONDARY_SESSION_ENDPOINT = "https://sessions.bugsnag.smartbear.com"
+    SECONDARY_PREFIX = "00000"
 
     DEFAULT_META_DATA_FILTERS = [
       /authorization/i,
@@ -548,8 +548,8 @@ def session_endpoint=(new_session_endpoint)
     def set_default_endpoints
       return unless @endpoints.notify.nil? && @endpoints.sessions.nil?
 
-      self.endpoints = if hub_api_key?
-                         EndpointConfiguration.new(HUB_NOTIFY_ENDPOINT, HUB_SESSION_ENDPOINT)
+      self.endpoints = if secondary_api_key?
+                         EndpointConfiguration.new(SECONDARY_NOTIFY_ENDPOINT, SECONDARY_SESSION_ENDPOINT)
                        else
                          EndpointConfiguration.new(DEFAULT_NOTIFY_ENDPOINT, DEFAULT_SESSION_ENDPOINT)
                        end
@@ -769,8 +769,8 @@ def default_hostname
       ENV["DYNO"] || Socket.gethostname;
     end
 
-    def hub_api_key?
-      @api_key && @api_key.start_with?(HUB_PREFIX)
+    def secondary_api_key?
+      @api_key && @api_key.start_with?(SECONDARY_PREFIX)
     end
   end
 end
diff --git a/spec/configuration_spec.rb b/spec/configuration_spec.rb
index 9b056443..da2ac311 100644
--- a/spec/configuration_spec.rb
+++ b/spec/configuration_spec.rb
@@ -445,8 +445,8 @@ def output_lines
           Bugsnag.configure do |config|
             config.api_key = '00000472bd130ac0ab0f52715bbdc600'
           end
-          expect(Bugsnag.configuration.endpoints.notify).to eq(Bugsnag::Configuration::HUB_NOTIFY_ENDPOINT)
-          expect(Bugsnag.configuration.endpoints.sessions).to eq(Bugsnag::Configuration::HUB_SESSION_ENDPOINT)
+          expect(Bugsnag.configuration.endpoints.notify).to eq(Bugsnag::Configuration::SECONDARY_NOTIFY_ENDPOINT)
+          expect(Bugsnag.configuration.endpoints.sessions).to eq(Bugsnag::Configuration::SECONDARY_SESSION_ENDPOINT)
         end
       end
     end