diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3f93533..ae8a779 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Unreleased
+
+* Add Sanitiser::Strategy::SanitisingError to excluded exceptions list ([#402](https://github.com/alphagov/govuk_app_config/pull/402))
+
 # 9.14.3
 
 * Update SidekiqRedis healthcheck to work with Sidekiq 7 [#399](https://github.com/alphagov/govuk_app_config/pull/399)
diff --git a/lib/govuk_app_config/govuk_error/configuration.rb b/lib/govuk_app_config/govuk_error/configuration.rb
index 54e24d5..3d17612 100644
--- a/lib/govuk_app_config/govuk_error/configuration.rb
+++ b/lib/govuk_app_config/govuk_error/configuration.rb
@@ -47,6 +47,7 @@ def set_up_defaults
         "Slimmer::IntermittentRetrievalError",
         "Slimmer::SourceWrapperNotFoundError",
         "Sidekiq::JobRetry::Skip",
+        "Sanitiser::Strategy::SanitisingError",
         "SignalException",
       ]