diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index b5ee4e9d..f6d13365 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,6 +1,15 @@
 CHANGELOG - towerops-web
 ========================
 
+2026-02-12 - feat: email raw stacktrace on every Honeybadger exception
+  - Files: lib/towerops/honeybadger_notice_filter.ex, config/config.exs,
+    test/towerops/honeybadger_notice_filter_test.exs
+
+    Added a Honeybadger NoticeFilter that sends an email with the full error class, message,
+    stacktrace, and server environment info to graham@mcintire.me whenever an exception is
+    reported. The notice passes through unchanged so Honeybadger still receives it. Uses the
+    existing Swoosh mailer (Amazon SES in production, local adapter in dev).
+
 2026-02-12 - perf: performance improvements for scale (batch inserts, indexes, selective reloading)
   - Files: lib/towerops/snmp.ex, lib/towerops/devices.ex, lib/towerops_web/channels/agent_channel.ex,
     lib/towerops/workers/device_poller_worker.ex, lib/towerops_web/live/dashboard_live.ex,