diff --git a/Changes b/Changes
index 03a1da1..d8b3044 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,10 @@
 LIST OF CHANGES
 ---------------
 
+release 6.33.0 (2024-08-30)
+ - Study class updated following the addition of the
+   contaminated_human_data_access_group column to the study table.
+
 release 6.32.0 (2024-07-25)
  - add seq_product_irods_locations relationship to IseqProductMetric
 
diff --git a/lib/WTSI/DNAP/Warehouse/Schema/Result/Study.pm b/lib/WTSI/DNAP/Warehouse/Schema/Result/Study.pm
index a0aae64..7cbddae 100644
--- a/lib/WTSI/DNAP/Warehouse/Schema/Result/Study.pm
+++ b/lib/WTSI/DNAP/Warehouse/Schema/Result/Study.pm
@@ -300,6 +300,12 @@ The data destination type(s) for the study. It could be 'standard', '14mg' or 'g
   is_nullable: 1
   size: 255
 
+=head2 contaminated_human_data_access_group
+
+  data_type: 'varchar'
+  is_nullable: 1
+  size: 255
+
 =cut
 
 __PACKAGE__->add_columns(
@@ -404,6 +410,8 @@ __PACKAGE__->add_columns(
   { data_type => 'varchar', is_nullable => 1, size => 255 },
   'data_deletion_period',
   { data_type => 'varchar', is_nullable => 1, size => 255 },
+  'contaminated_human_data_access_group',
+  { data_type => 'varchar', is_nullable => 1, size => 255 },
 );
 
 =head1 PRIMARY KEY
@@ -572,8 +580,8 @@ __PACKAGE__->has_many(
 );
 
 
-# Created by DBIx::Class::Schema::Loader v0.07051 @ 2023-02-23 11:12:46
-# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:NrXlvzwGR2uLtnN+fJVHvw
+# Created by DBIx::Class::Schema::Loader v0.07052 @ 2024-08-08 13:33:16
+# DO NOT MODIFY THIS OR ANYTHING ABOVE! md5sum:cSZp6NXki9BI3+HAAlBY9w
 
 with 'WTSI::DNAP::Warehouse::Schema::Query::LimsFlags';