diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 73f47542..dc146ca1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,12 +1,14 @@
 on:
-  - pull_request
-  - push
+  pull_request:
+  push:
+    branches:
+      - master
 
 name: build
 
 jobs:
   tests:
-    name: PHP ${{ matrix.php }}-${{ matrix.os }}
+    name: PHP ${{ matrix.php }}-sphinx-${{ matrix.sphinx }}-${{ matrix.os }}
 
     env:
       extensions: pdo, pdo_mysql
@@ -17,8 +19,7 @@ jobs:
     strategy:
       matrix:
         os:
-          - ubuntu-18.04
-
+          - ubuntu-20.04
         php:
           - "5.4"
           - "5.5"
@@ -28,6 +29,18 @@ jobs:
           - "7.2"
           - "7.3"
           - "7.4"
+        sphinx:
+          - "2.2.11"
+          - "3.5.1"
+
+    services:
+      mysql:
+        image: mysql:5.7
+        env:
+          MYSQL_ROOT_PASSWORD: root
+          MYSQL_DATABASE: yiitest
+        ports:
+          - 3306:3306
 
     steps:
       - name: Checkout
@@ -53,14 +66,24 @@ jobs:
         if: matrix.php == '8.0'
         run: composer update --ignore-platform-reqs --prefer-dist --no-interaction --no-progress --optimize-autoloader --ansi
 
+      - name: Install sphinx
+        run: sh tests/data/actions/sphinx-setup-${{ matrix.sphinx }}.sh
+
       - name: Setup source database
         run: |
-          sudo /etc/init.d/mysql start
-          mysql -uroot -proot -e 'CREATE DATABASE `yiitest`;'
-          mysql -D yiitest -uroot -proot < tests/data/source.sql
+            mysql -h127.0.0.1 -D yiitest -uroot -proot < tests/data/source.sql
 
-      - name: Install sphinx
-        run: cd tests/data/actions && sh sphinx-setup.sh
+      - name: Run sphinx 2.2.11
+        if: matrix.sphinx == '2.2.11'
+        run: |
+            indexer --config tests/data/sphinx-${{ matrix.sphinx }}.conf --all
+            searchd --config tests/data/sphinx-${{ matrix.sphinx }}.conf
+
+      - name: Run sphinx 3
+        if: matrix.sphinx != '2.2.11'
+        run: |
+            /opt/sphinx/sphinx-${{ matrix.sphinx }}/bin/indexer --config tests/data/sphinx-${{ matrix.sphinx }}.conf --all
+            /opt/sphinx/sphinx-${{ matrix.sphinx }}/bin/searchd --config tests/data/sphinx-${{ matrix.sphinx }}.conf
 
       - name: Run tests with phpunit
         if: matrix.php != '7.4'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d08849a1..0422cd8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ Yii Framework 2 sphinx extension Change Log
 2.0.16 under development
 ------------------------
 
-- no changes in this release.
+- Enh #144: Add `UINT_SET` attribute type support (@vjik)
 
 
 2.0.15 November 18, 2022
diff --git a/composer.json b/composer.json
index 447f29a8..dc00941f 100644
--- a/composer.json
+++ b/composer.json
@@ -38,5 +38,11 @@
         "branch-alias": {
             "dev-master": "2.0.x-dev"
         }
+    },
+    "config": {
+        "sort-packages": true,
+        "allow-plugins": {
+            "yiisoft/yii2-composer": true
+        }
     }
 }
diff --git a/src/Schema.php b/src/Schema.php
index f5450eea..a1dd76ad 100644
--- a/src/Schema.php
+++ b/src/Schema.php
@@ -76,6 +76,7 @@ class Schema extends BaseObject
         'bool' => self::TYPE_BOOLEAN,
         'float' => self::TYPE_FLOAT,
         'mva' => self::TYPE_INTEGER,
+        'uint_set' => self::TYPE_INTEGER,
     ];
 
     /**
@@ -538,7 +539,7 @@ protected function loadColumnSchema($info)
         $column->isField = ($type === 'field');
         $column->isAttribute = !$column->isField;
 
-        $column->isMva = ($type === 'mva');
+        $column->isMva = $type === 'mva' || $type === 'uint_set';
 
         $column->phpType = $this->getColumnPhpType($column);
 
diff --git a/tests/QueryTest.php b/tests/QueryTest.php
index 2ff9b16d..1a502757 100644
--- a/tests/QueryTest.php
+++ b/tests/QueryTest.php
@@ -18,7 +18,7 @@ public function testSelect()
         $query = new Query();
         $query->select('*');
         $this->assertEquals(['*' => '*'], $query->select);
-        $this->assertNull($query->distinct);
+        $this->assertFalse($query->distinct);
         $this->assertEquals(null, $query->selectOption);
 
         $query = new Query();
@@ -458,6 +458,9 @@ public function testFacets()
     {
         $connection = $this->getConnection();
 
+        $rawSphinxVersion = $connection->createCommand("SHOW GLOBAL VARIABLES LIKE 'version'")->queryOne();
+        $sphinxVersion = isset($rawSphinxVersion['Value']) ? $rawSphinxVersion['Value'] : '';
+
         $query = new Query();
         $results = $query->from('yii2_test_article_index')
             ->match('about')
@@ -480,18 +483,33 @@ public function testFacets()
         $this->assertNotEmpty($results['hits'], 'Unable to query with complex facet');
         $this->assertNotEmpty($results['facets']['author_id'], 'Unable to fill up complex facet');
 
-        $query = new Query();
-        $results = $query->from('yii2_test_article_index')
-            ->match('about')
-            ->facets([
-                'range' => [
-                    'select' => 'INTERVAL(author_id,200,400,600,800) AS range',
-                ],
-                'authorId' => [
-                    'select' => [new Expression('author_id AS authorId')],
-                ],
-            ])
-            ->search($connection);
+        $query = (new Query())
+            ->from('yii2_test_article_index')
+            ->match('about');
+
+        if (strpos($sphinxVersion, '3.') === 0) {
+            $query = $query
+                ->select(new Expression('INTERVAL(author_id,200,400,600,800) AS range'))
+                ->facets([
+                    'range' => [
+                        'select' => 'range',
+                    ],
+                    'authorId' => [
+                        'select' => [new Expression('author_id AS authorId')],
+                    ],
+                ]);
+        } else {
+            $query = $query
+                ->facets([
+                    'range' => [
+                        'select' => 'INTERVAL(author_id,200,400,600,800) AS range',
+                    ],
+                    'authorId' => [
+                        'select' => [new Expression('author_id AS authorId')],
+                    ],
+                ]);
+        }
+        $results = $query->search($connection);
         $this->assertNotEmpty($results['hits'], 'Unable to query with facet using custom select');
         $this->assertNotEmpty($results['facets']['range'], 'Unable to fill up facet using function in select');
         $this->assertNotEmpty($results['facets']['authorId'], 'Unable to fill up facet using `Expression` in select');
diff --git a/tests/data/actions/sphinx-setup.sh b/tests/data/actions/sphinx-setup-2.2.11.sh
similarity index 54%
rename from tests/data/actions/sphinx-setup.sh
rename to tests/data/actions/sphinx-setup-2.2.11.sh
index 4e67fdb4..ce370b7a 100644
--- a/tests/data/actions/sphinx-setup.sh
+++ b/tests/data/actions/sphinx-setup-2.2.11.sh
@@ -2,16 +2,15 @@
 SCRIPT=$(readlink -f "$0")
 CWD=$(dirname "$SCRIPT")
 
+# https://askubuntu.com/a/1337909
+echo 'deb http://security.ubuntu.com/ubuntu xenial-security main' | sudo tee /etc/apt/sources.list.d/xenial-security.list
+sudo apt update
+sudo apt install libmysqlclient20
+
 # install sphinx from https://sphinxsearch.com/downloads/release/
 wget http://sphinxsearch.com/files/sphinxsearch_2.2.11-release-1~xenial_amd64.deb
 sudo dpkg -i sphinxsearch_2.2.11-release-1~xenial_amd64.deb
 
 # make dir that is used in sphinx config
 mkdir -p sphinx
-sed -i s\~SPHINX_BASE_DIR~$PWD/sphinx~g $CWD/../sphinx.conf
-
-# setup test Sphinx indexes:
-indexer --config $CWD/../sphinx.conf --all
-
-# run searchd:
-searchd --config $CWD/../sphinx.conf
+sed -i s\~SPHINX_BASE_DIR~$PWD/sphinx~g $CWD/../sphinx-2.2.11.conf
diff --git a/tests/data/actions/sphinx-setup-3.5.1.sh b/tests/data/actions/sphinx-setup-3.5.1.sh
new file mode 100644
index 00000000..1632cf9c
--- /dev/null
+++ b/tests/data/actions/sphinx-setup-3.5.1.sh
@@ -0,0 +1,12 @@
+#!/bin/sh -e
+SCRIPT=$(readlink -f "$0")
+CWD=$(dirname "$SCRIPT")
+
+wget https://sphinxsearch.com/files/sphinx-3.5.1-82c60cb-linux-amd64.tar.gz -O /tmp/sphinxsearch.tar.gz
+sudo mkdir /opt/sphinx
+cd /opt/sphinx && sudo tar -zxf /tmp/sphinxsearch.tar.gz
+rm /tmp/sphinxsearch.tar.gz
+
+# make dir that is used in sphinx config
+mkdir -p $PWD/sphinx
+sed -i s\~SPHINX_BASE_DIR~$PWD/sphinx~g $CWD/../sphinx-3.5.1.conf
diff --git a/tests/data/source.sql b/tests/data/source.sql
index 9f37ad4d..74650476 100644
--- a/tests/data/source.sql
+++ b/tests/data/source.sql
@@ -1056,4 +1056,4 @@ INSERT INTO `yii2_test_article_tag` (`article_id`, `tag_id`) VALUES
 (1, 2),
 (1, 3),
 (2, 3),
-(2, 4);
\ No newline at end of file
+(2, 4);
diff --git a/tests/data/sphinx.conf b/tests/data/sphinx-2.2.11.conf
similarity index 98%
rename from tests/data/sphinx.conf
rename to tests/data/sphinx-2.2.11.conf
index 4a9ed53f..377dcd97 100644
--- a/tests/data/sphinx.conf
+++ b/tests/data/sphinx-2.2.11.conf
@@ -13,7 +13,7 @@ source yii2_test_article_src
 {
 	type			= mysql
 
-	sql_host		= localhost
+	sql_host		= 127.0.0.1
 	sql_user		= root
 	sql_pass		= root
 	sql_db			= yiitest
@@ -34,7 +34,7 @@ source yii2_test_item_src
 {
 	type			= mysql
 
-	sql_host		= localhost
+	sql_host		= 127.0.0.1
 	sql_user		= root
 	sql_pass		= root
 	sql_db			= yiitest
diff --git a/tests/data/sphinx-3.5.1.conf b/tests/data/sphinx-3.5.1.conf
new file mode 100644
index 00000000..6f304e5f
--- /dev/null
+++ b/tests/data/sphinx-3.5.1.conf
@@ -0,0 +1,116 @@
+# Sphinx configuration for the unit tests
+#
+# Setup test environment:
+# - initialize test database source:
+# mysql -D yiitest -u test < /path/to/yii/tests/unit/data/sphinx/source.sql
+# - setup test Sphinx indexes:
+# indexer --config /path/to/yii/tests/unit/data/sphinx/sphinx.conf --all [--rotate]
+# - run the "searchd" daemon:
+# searchd --config /path/to/yii/tests/unit/data/sphinx/sphinx.conf
+
+
+source yii2_test_article_src
+{
+	type			= mysql
+
+	sql_host		= 127.0.0.1
+	sql_user		= root
+	sql_pass		= root
+	sql_db			= yiitest
+	sql_port		= 3306	# optional, default is 3306
+
+	sql_query		= \
+		SELECT *, UNIX_TIMESTAMP(create_date) AS add_date \
+		FROM yii2_test_article
+
+	sql_attr_uint		= author_id
+	sql_attr_uint   	= add_date
+	sql_attr_multi		= uint tag from query; SELECT article_id AS id, tag_id AS tag FROM yii2_test_article_tag
+}
+
+
+source yii2_test_item_src
+{
+	type			= mysql
+
+	sql_host		= 127.0.0.1
+	sql_user		= root
+	sql_pass		= root
+	sql_db			= yiitest
+	sql_port		= 3306	# optional, default is 3306
+
+	sql_query		= \
+		SELECT *, CURRENT_TIMESTAMP() AS add_date \
+		FROM yii2_test_item \
+		WHERE id <= 100
+
+	sql_attr_uint		= category_id
+	sql_attr_float		= price
+	sql_attr_uint	    = add_date
+}
+
+
+source yii2_test_item_delta_src : yii2_test_item_src
+{
+	sql_query		= \
+		SELECT *, CURRENT_TIMESTAMP() AS add_date \
+		FROM yii2_test_item \
+		WHERE id > 100
+}
+
+
+index yii2_test_article_index
+{
+	source			= yii2_test_article_src
+}
+
+
+index yii2_test_item_index
+{
+	source			= yii2_test_item_src
+}
+
+
+index yii2_test_item_delta_index : yii2_test_item_index
+{
+	source			= yii2_test_item_delta_src
+}
+
+
+index yii2_test_rt_index
+{
+	type			= rt
+	rt_field		= title
+	rt_attr_string	= title
+	rt_field		= content
+	rt_attr_uint	= type_id
+	rt_attr_multi	= category
+}
+
+
+index yii2_test_distributed
+{
+	type			= distributed
+	local			= yii2_test_article_index
+}
+
+common {
+    datadir = SPHINX_BASE_DIR
+}
+
+indexer
+{
+	mem_limit		= 32M
+}
+
+searchd
+{
+	#listen			= 127.0.0.1:9312
+	listen			= 19306:mysql41
+	read_timeout	= 5
+	max_children	= 30
+	seamless_rotate	= 1
+	preopen_indexes	= 1
+	unlink_old		= 1
+	workers			= threads # for RT to work
+}