diff --git a/config/initializers/deprecations.rb b/config/initializers/deprecations.rb
new file mode 100644
index 0000000000..76d05f9acd
--- /dev/null
+++ b/config/initializers/deprecations.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+ActiveSupport::Notifications.subscribe(/deprecation/) do |_name, _start, _finish, _id, payload|
+  e = ActiveSupport::DeprecationException.new(payload[:message])
+  e.set_backtrace(payload[:callstack].map(&:to_s))
+
+  Bugsnag.notify(e) do |report|
+    report.severity = "warning"
+    report.add_tab(
+      :deprecation,
+      payload.except(:callstack),
+    )
+  end
+end