diff --git a/conf/evolutions/default/54.sql b/conf/evolutions/default/54.sql
new file mode 100644
index 000000000..86e06d3e9
--- /dev/null
+++ b/conf/evolutions/default/54.sql
@@ -0,0 +1,98 @@
+-- !Ups
+
+-- because answer_metadata depends on it
+DROP VIEW user_group_is_invited_on_application;
+
+DROP VIEW answer_metadata;
+
+-- add answer.answer_type
+CREATE VIEW answer_metadata AS
+SELECT
+  answer.id,
+  answer.application_id,
+  answer.creation_date,
+  answer.answer_type,
+  answer.creator_user_id,
+  answer.creator_user_name,
+  answer.invited_users,
+  answer.invited_group_ids,
+  answer.visible_by_helpers,
+  answer.declare_application_has_irrelevant
+FROM application,
+     LATERAL jsonb_to_recordset(answers)
+     AS answer(id uuid,
+               application_id uuid,
+               creation_date text,
+               answer_type text,
+               creator_user_id uuid,
+               creator_user_name text,
+               invited_users jsonb,
+               invited_group_ids uuid[],
+               visible_by_helpers boolean,
+               declare_application_has_irrelevant boolean);
+
+CREATE VIEW user_group_is_invited_on_application AS
+SELECT *
+FROM (
+  SELECT
+    unnest(invited_group_ids) AS group_id,
+    id AS application_id,
+    true AS at_creation
+  FROM application
+) a
+UNION
+(
+  SELECT
+    unnest(invited_group_ids) AS group_id,
+    application_id,
+    false AS at_creation
+  FROM answer_metadata
+);
+
+
+
+-- !Downs
+
+DROP VIEW user_group_is_invited_on_application;
+DROP VIEW answer_metadata;
+
+CREATE VIEW answer_metadata AS
+SELECT
+  answer.id,
+  answer.application_id,
+  answer.creation_date,
+  answer.creator_user_id,
+  answer.creator_user_name,
+  answer.invited_users,
+  answer.invited_group_ids,
+  answer.visible_by_helpers,
+  answer.declare_application_has_irrelevant
+FROM application,
+     LATERAL jsonb_to_recordset(answers)
+     AS answer(id uuid,
+               application_id uuid,
+               creation_date text,
+               creator_user_id uuid,
+               creator_user_name text,
+               invited_users jsonb,
+               invited_group_ids uuid[],
+               visible_by_helpers boolean,
+               declare_application_has_irrelevant boolean);
+
+CREATE VIEW user_group_is_invited_on_application AS
+SELECT *
+FROM (
+  SELECT
+    unnest(invited_group_ids) AS group_id,
+    id AS application_id,
+    true AS at_creation
+  FROM application
+) a
+UNION
+(
+  SELECT
+    unnest(invited_group_ids) AS group_id,
+    application_id,
+    false AS at_creation
+  FROM answer_metadata
+);