diff --git a/CHANGELOG.md b/CHANGELOG.md
index 29a696c..ab19a99 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## [Unreleased]
-* no unreleased changes
+## Fixed
+* Add 2027 bank holidays
 
 ## 5.10.4 / 2024-11-13
 ### Added
diff --git a/lib/ndr_support/concerns/working_days.rb b/lib/ndr_support/concerns/working_days.rb
index 98d82cc..f5828f0 100644
--- a/lib/ndr_support/concerns/working_days.rb
+++ b/lib/ndr_support/concerns/working_days.rb
@@ -1,10 +1,11 @@
 require 'active_support/time'
 
 # This module contains logic for #working_days_until, #weekday?, and #public_holiday?.
-module WorkingDays
+module WorkingDays # rubocop:disable Metrics/ModuleLength
   WEEK_DAYS = 1..5
   
   # TODO: could we use https://github.com/alphagov/gds-api-adapters ?
+  # rubocop:disable Style/TrailingCommaInArrayLiteral
   HOLIDAYS  = [ # Sourced from https://www.gov.uk/bank-holidays
     # 2012
     '2012-01-02', # Monday    - New Year's Day (substitute day)
@@ -145,7 +146,17 @@ module WorkingDays
     '2026-08-31', # Monday    - Summer bank holiday
     '2026-12-25', # Friday    - Christmas Day
     '2026-12-28', # Monday    - Boxing Day
+    # 2027
+    '2027-01-01', # Friday    - New Year’s Day
+    '2027-03-26', # Friday    - Good Friday
+    '2027-03-29', # Monday    - Easter Monday
+    '2027-05-03', # Monday    - Early May bank holiday
+    '2027-05-31', # Monday    - Spring bank holiday
+    '2027-08-30', # Monday    - Summer bank holiday
+    '2027-12-27', # Monday    - Christmas Day
+    '2027-12-28', # Tuesday   - Boxing Day
   ].map { |str| Date.parse(str) }
+  # rubocop:enable Style/TrailingCommaInArrayLiteral
 
   def self.check_lookup
     return true if HOLIDAYS.max >= 1.year.from_now