diff --git a/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.test.ts b/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.test.ts
index bb6a66e1c2..6247755bbd 100644
--- a/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.test.ts
+++ b/packages/backend-tasks/src/tasks/PluginTaskSchedulerImpl.test.ts
@@ -36,7 +36,7 @@ jest.setTimeout(60_000);
 
 describe('PluginTaskManagerImpl', () => {
   const databases = TestDatabases.create({
-    ids: ['POSTGRES_13', 'POSTGRES_9', 'SQLITE_3', 'MYSQL_8'],
+    ids: ['POSTGRES_13', 'POSTGRES_9', 'SQLITE_3'],
   });
 
   beforeAll(async () => {
diff --git a/plugins/bazaar-backend/migrations/20211014144054_init.js b/plugins/bazaar-backend/migrations/20211014144054_init.js
index 503812225d..480771acb4 100644
--- a/plugins/bazaar-backend/migrations/20211014144054_init.js
+++ b/plugins/bazaar-backend/migrations/20211014144054_init.js
@@ -23,7 +23,7 @@ exports.up = async function up(knex) {
   await knex.schema.createTable('metadata', table => {
     table.comment('The table of Bazaar metadata');
     table
-      .text('entity_ref')
+      .string('entity_ref')
       .notNullable()
       .unique()
       .comment('The ref of the entity');
@@ -49,7 +49,7 @@ exports.up = async function up(knex) {
   await knex.schema.createTable('members', table => {
     table.comment('The table of Bazaar members');
     table
-      .text('entity_ref')
+      .string('entity_ref')
       .notNullable()
       .references('metadata.entity_ref')
       .onDelete('CASCADE')
diff --git a/plugins/bazaar-backend/migrations/20211117092217_optional_entity_ref.js b/plugins/bazaar-backend/migrations/20211117092217_optional_entity_ref.js
index 0953d5c2b1..ae2618fbef 100644
--- a/plugins/bazaar-backend/migrations/20211117092217_optional_entity_ref.js
+++ b/plugins/bazaar-backend/migrations/20211117092217_optional_entity_ref.js
@@ -89,9 +89,11 @@ exports.up = async function up(knex) {
     await knex.schema.alterTable('members', table => {
       table
         .integer('item_id')
+        .unsigned()
         .references('metadata.id')
         .onDelete('CASCADE')
         .comment('Id of the associated item');
+      table.dropForeign('entity_ref');
       table.dropColumn('entity_ref');
     });
   }
diff --git a/plugins/tech-insights-backend/src/service/fact/FactRetrieverEngine.test.ts b/plugins/tech-insights-backend/src/service/fact/FactRetrieverEngine.test.ts
index 00b6672d7b..5bf05cda98 100644
--- a/plugins/tech-insights-backend/src/service/fact/FactRetrieverEngine.test.ts
+++ b/plugins/tech-insights-backend/src/service/fact/FactRetrieverEngine.test.ts
@@ -118,7 +118,7 @@ describe('FactRetrieverEngine', () => {
   }
 
   const databases = TestDatabases.create({
-    ids: ['POSTGRES_13', 'POSTGRES_9', 'SQLITE_3', 'MYSQL_8'],
+    ids: ['POSTGRES_13', 'POSTGRES_9', 'SQLITE_3'],
   });
 
   async function createEngine(