diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000000..c704d7d05b
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,9 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    labels:
+      - "CI"
+    target-branch: "2.19.x"
diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index ac2788b39a..659da17bac 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -24,4 +24,4 @@ on:
 
 jobs:
   coding-standards:
-    uses: "doctrine/.github/.github/workflows/coding-standards.yml@3.0.0"
+    uses: "doctrine/.github/.github/workflows/coding-standards.yml@5.0.1"
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index e9facd697d..b84a942213 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -75,7 +75,7 @@ jobs:
         if: "${{ matrix.dbal-version != 'default' }}"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
         with:
           composer-options: "--ignore-platform-req=php+"
           dependency-versions: "${{ matrix.deps }}"
@@ -156,7 +156,7 @@ jobs:
         if: "${{ matrix.dbal-version != 'default' }}"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
         with:
           composer-options: "--ignore-platform-req=php+"
 
@@ -222,7 +222,7 @@ jobs:
           extensions: "${{ matrix.extension }}"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
         with:
           composer-options: "--ignore-platform-req=php+"
 
@@ -296,7 +296,7 @@ jobs:
         if: "${{ matrix.dbal-version != 'default' }}"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
         with:
           composer-options: "--ignore-platform-req=php+"
 
@@ -337,6 +337,8 @@ jobs:
           path: "reports"
 
       - name: "Upload to Codecov"
-        uses: "codecov/codecov-action@v3"
+        uses: "codecov/codecov-action@v4"
         with:
           directory: reports
+        env:
+          CODECOV_TOKEN: "${{ secrets.CODECOV_TOKEN }}"
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index ef8053a211..65cbad613b 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -36,7 +36,7 @@ jobs:
         run: "composer require --dev phpdocumentor/guides-cli --no-update"
 
       - name: "Install dependencies with Composer"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
         with:
           dependency-versions: "highest"
 
diff --git a/.github/workflows/phpbench.yml b/.github/workflows/phpbench.yml
index d98e7fa215..2a09ec3b18 100644
--- a/.github/workflows/phpbench.yml
+++ b/.github/workflows/phpbench.yml
@@ -47,15 +47,8 @@ jobs:
           coverage: "pcov"
           ini-values: "zend.assertions=1, apc.enable_cli=1"
 
-      - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v3"
-        with:
-          path: "~/.composer/cache"
-          key: "php-${{ matrix.php-version }}-composer-locked-${{ hashFiles('composer.lock') }}"
-          restore-keys: "php-${{ matrix.php-version }}-composer-locked-"
-
-      - name: "Install dependencies with composer"
-        run: "composer update --no-interaction --no-progress"
+      - name: "Install dependencies with Composer"
+        uses: "ramsey/composer-install@v3"
 
       - name: "Run PHPBench"
         run: "vendor/bin/phpbench run --report=default"
diff --git a/.github/workflows/release-on-milestone-closed.yml b/.github/workflows/release-on-milestone-closed.yml
index d46dc4c36b..89d4fe8bf1 100644
--- a/.github/workflows/release-on-milestone-closed.yml
+++ b/.github/workflows/release-on-milestone-closed.yml
@@ -7,7 +7,7 @@ on:
 
 jobs:
   release:
-    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@4.0.0"
+    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@5.0.1"
     secrets:
       GIT_AUTHOR_EMAIL: ${{ secrets.GIT_AUTHOR_EMAIL }}
       GIT_AUTHOR_NAME: ${{ secrets.GIT_AUTHOR_NAME }}
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index 5082f75051..52f30872a9 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -83,7 +83,7 @@ jobs:
         if: "${{ matrix.dbal-version != 'default' }}"
 
       - name: Install dependencies with Composer
-        uses: ramsey/composer-install@v2
+        uses: ramsey/composer-install@v3
 
       - name: Run static analysis with Vimeo Psalm
         run: vendor/bin/psalm --shepherd
diff --git a/src/Query/SqlWalker.php b/src/Query/SqlWalker.php
index 018c2455e4..004d29e773 100644
--- a/src/Query/SqlWalker.php
+++ b/src/Query/SqlWalker.php
@@ -30,6 +30,7 @@
 use function implode;
 use function is_array;
 use function is_float;
+use function is_int;
 use function is_numeric;
 use function is_string;
 use function preg_match;
@@ -384,7 +385,9 @@ private function generateDiscriminatorColumnConditionSQL(array $dqlAliases): str
             $values = [];
 
             if ($class->discriminatorValue !== null) { // discriminators can be 0
-                $values[] = $conn->quote($class->discriminatorValue);
+                $values[] = $class->getDiscriminatorColumn()->type === 'integer' && is_int($class->discriminatorValue)
+                    ? $class->discriminatorValue
+                    : $conn->quote((string) $class->discriminatorValue);
             }
 
             foreach ($class->subClasses as $subclassName) {
@@ -396,7 +399,9 @@ private function generateDiscriminatorColumnConditionSQL(array $dqlAliases): str
                     continue;
                 }
 
-                $values[] = $conn->quote((string) $subclassMetadata->discriminatorValue);
+                $values[] = $subclassMetadata->getDiscriminatorColumn()->type === 'integer' && is_int($subclassMetadata->discriminatorValue)
+                    ? $subclassMetadata->discriminatorValue
+                    : $conn->quote((string) $subclassMetadata->discriminatorValue);
             }
 
             if ($values !== []) {
@@ -2246,8 +2251,10 @@ private function getChildDiscriminatorsFromClassMetadata(
             $discriminators += HierarchyDiscriminatorResolver::resolveDiscriminatorsForClass($metadata, $this->em);
         }
 
-        foreach (array_keys($discriminators) as $dis) {
-            $sqlParameterList[] = $this->conn->quote($dis);
+        foreach (array_keys($discriminators) as $discriminatorValue) {
+            $sqlParameterList[] = $rootClass->getDiscriminatorColumn()->type === 'integer' && is_int($discriminatorValue)
+                ? $discriminatorValue
+                : $this->conn->quote((string) $discriminatorValue);
         }
 
         return '(' . implode(', ', $sqlParameterList) . ')';
diff --git a/tests/Tests/ORM/Functional/Ticket/GH11341Test.php b/tests/Tests/ORM/Functional/Ticket/GH11341Test.php
new file mode 100644
index 0000000000..5c35dfe86c
--- /dev/null
+++ b/tests/Tests/ORM/Functional/Ticket/GH11341Test.php
@@ -0,0 +1,157 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\ORM\Mapping as ORM;
+use Doctrine\Tests\OrmFunctionalTestCase;
+use Generator;
+use PHPUnit\Framework\Attributes\DataProvider;
+
+class GH11341Test extends OrmFunctionalTestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->setUpEntitySchema([
+            IntegerBaseClass::class,
+            IntegerFooEntity::class,
+            IntegerBarEntity::class,
+            StringAsIntBaseClass::class,
+            StringAsIntFooEntity::class,
+            StringAsIntBarEntity::class,
+            StringBaseClass::class,
+            StringFooEntity::class,
+            StringBarEntity::class,
+        ]);
+    }
+
+    public static function dqlStatements(): Generator
+    {
+        yield ['SELECT e FROM ' . IntegerBaseClass::class . ' e', '/WHERE [a-z]0_.type IN \(1, 2\)$/'];
+        yield ['SELECT e FROM ' . IntegerFooEntity::class . ' e', '/WHERE [a-z]0_.type IN \(1\)$/'];
+        yield ['SELECT e FROM ' . IntegerBarEntity::class . ' e', '/WHERE [a-z]0_.type IN \(2\)$/'];
+        yield ['SELECT e FROM ' . StringAsIntBaseClass::class . ' e', '/WHERE [a-z]0_.type IN \(\'1\', \'2\'\)$/'];
+        yield ['SELECT e FROM ' . StringAsIntFooEntity::class . ' e', '/WHERE [a-z]0_.type IN \(\'1\'\)$/'];
+        yield ['SELECT e FROM ' . StringAsIntBarEntity::class . ' e', '/WHERE [a-z]0_.type IN \(\'2\'\)$/'];
+        yield ['SELECT e FROM ' . StringBaseClass::class . ' e', '/WHERE [a-z]0_.type IN \(\'1\', \'2\'\)$/'];
+        yield ['SELECT e FROM ' . StringFooEntity::class . ' e', '/WHERE [a-z]0_.type IN \(\'1\'\)$/'];
+        yield ['SELECT e FROM ' . StringBarEntity::class . ' e', '/WHERE [a-z]0_.type IN \(\'2\'\)$/'];
+    }
+
+    #[DataProvider('dqlStatements')]
+    public function testDiscriminatorValue(string $dql, string $expectedDiscriminatorValues): void
+    {
+        $query = $this->_em->createQuery($dql);
+        $sql   = $query->getSQL();
+
+        self::assertMatchesRegularExpression($expectedDiscriminatorValues, $sql);
+    }
+
+    public static function dqlStatementsForInstanceOf(): Generator
+    {
+        yield [IntegerBaseClass::class, IntegerFooEntity::class];
+        yield [StringBaseClass::class, StringFooEntity::class];
+        yield [StringAsIntBaseClass::class, StringAsIntFooEntity::class];
+    }
+
+    /**
+     * @psalm-param class-string $baseClass
+     * @psalm-param class-string $inheritedClass
+     */
+    #[DataProvider('dqlStatementsForInstanceOf')]
+    public function testInstanceOf(string $baseClass, string $inheritedClass): void
+    {
+        $this->_em->persist(new $inheritedClass());
+        $this->_em->flush();
+
+        $dql = 'SELECT p FROM ' . $baseClass . ' p WHERE p INSTANCE OF ' . $baseClass;
+
+        $query  = $this->_em->createQuery($dql);
+        $result = $query->getResult();
+
+        self::assertCount(1, $result);
+        self::assertContainsOnlyInstancesOf($baseClass, $result);
+    }
+}
+
+#[ORM\Entity]
+#[ORM\Table(name: 'integer_discriminator')]
+#[ORM\InheritanceType('SINGLE_TABLE')]
+#[ORM\DiscriminatorColumn(name: 'type', type: 'integer')]
+#[ORM\DiscriminatorMap([
+    1 => IntegerFooEntity::class,
+    2 => IntegerBarEntity::class,
+])]
+class IntegerBaseClass
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue(strategy: 'IDENTITY')]
+    #[ORM\Column(type: 'integer')]
+    private int|null $id = null;
+}
+
+#[ORM\Entity]
+class IntegerFooEntity extends IntegerBaseClass
+{
+}
+
+#[ORM\Entity]
+class IntegerBarEntity extends IntegerBaseClass
+{
+}
+
+#[ORM\Entity]
+#[ORM\Table(name: 'string_as_int_discriminator')]
+#[ORM\InheritanceType('SINGLE_TABLE')]
+#[ORM\DiscriminatorColumn(name: 'type', type: 'string')]
+#[ORM\DiscriminatorMap([
+    1 => StringAsIntFooEntity::class,
+    2 => StringAsIntBarEntity::class,
+])]
+class StringAsIntBaseClass
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue(strategy: 'IDENTITY')]
+    #[ORM\Column(type: 'integer')]
+    private int|null $id = null;
+}
+
+#[ORM\Entity]
+class StringAsIntFooEntity extends StringAsIntBaseClass
+{
+}
+
+#[ORM\Entity]
+class StringAsIntBarEntity extends StringAsIntBaseClass
+{
+}
+
+
+#[ORM\Entity]
+#[ORM\Table(name: 'string_discriminator')]
+#[ORM\InheritanceType('SINGLE_TABLE')]
+#[ORM\DiscriminatorColumn(name: 'type', type: 'string')]
+#[ORM\DiscriminatorMap([
+    '1' => StringFooEntity::class,
+    '2' => StringBarEntity::class,
+])]
+class StringBaseClass
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue(strategy: 'IDENTITY')]
+    #[ORM\Column(type: 'integer')]
+    private int|null $id = null;
+}
+
+#[ORM\Entity]
+class StringFooEntity extends StringBaseClass
+{
+}
+
+#[ORM\Entity]
+class StringBarEntity extends StringBaseClass
+{
+}