diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 07d12226501..98fcb3cfc0a 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -91,9 +91,9 @@ jobs:
             ENABLE_SECOND_LEVEL_CACHE: 1
 
       - name: "Upload coverage file"
-        uses: "actions/upload-artifact@v3"
+        uses: "actions/upload-artifact@v4"
         with:
-          name: "phpunit-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-coverage"
+          name: "phpunit-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-${{ matrix.proxy }}-coverage"
           path: "coverage*.xml"
 
 
@@ -164,9 +164,9 @@ jobs:
         run: "vendor/bin/phpunit -c ci/github/phpunit/pdo_pgsql.xml --coverage-clover=coverage.xml"
 
       - name: "Upload coverage file"
-        uses: "actions/upload-artifact@v3"
+        uses: "actions/upload-artifact@v4"
         with:
-          name: "${{ github.job }}-${{ matrix.postgres-version }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-coverage"
+          name: "${{ github.job }}-${{ matrix.postgres-version }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-${{ matrix.extension }}-coverage"
           path: "coverage.xml"
 
 
@@ -230,7 +230,7 @@ jobs:
         run: "vendor/bin/phpunit -c ci/github/phpunit/${{ matrix.extension }}.xml --coverage-clover=coverage.xml"
 
       - name: "Upload coverage file"
-        uses: "actions/upload-artifact@v3"
+        uses: "actions/upload-artifact@v4"
         with:
           name: "${{ github.job }}-${{ matrix.mariadb-version }}-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-coverage"
           path: "coverage.xml"
@@ -311,7 +311,7 @@ jobs:
             ENABLE_SECOND_LEVEL_CACHE: 1
 
       - name: "Upload coverage files"
-        uses: "actions/upload-artifact@v3"
+        uses: "actions/upload-artifact@v4"
         with:
           name: "${{ github.job }}-${{ matrix.mysql-version }}-${{ matrix.extension }}-${{ matrix.php-version }}-${{ matrix.dbal-version }}-coverage"
           path: "coverage*.xml"
@@ -332,7 +332,7 @@ jobs:
           fetch-depth: 2
 
       - name: "Download coverage files"
-        uses: "actions/download-artifact@v3"
+        uses: "actions/download-artifact@v4"
         with:
           path: "reports"
 
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index f0bbf5b9e2a..bd9ebea8d28 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -27,7 +27,7 @@ jobs:
         uses: "shivammathur/setup-php@v2"
         with:
           coverage: "none"
-          php-version: "8.2"
+          php-version: "8.3"
 
       - name: "Remove existing composer file"
         run: "rm composer.json"
diff --git a/.github/workflows/release-on-milestone-closed.yml b/.github/workflows/release-on-milestone-closed.yml
index c4389142616..d46dc4c36bb 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@3.0.0"
+    uses: "doctrine/.github/.github/workflows/release-on-milestone-closed.yml@4.0.0"
     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 32478b18cc1..5082f75051d 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -43,7 +43,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           coverage: none
-          php-version: "8.2"
+          php-version: "8.3"
           tools: cs2pr
 
       - name: Require specific DBAL version
@@ -75,7 +75,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           coverage: none
-          php-version: "8.2"
+          php-version: "8.3"
           tools: cs2pr
 
       - name: Require specific DBAL version
diff --git a/src/Tools/SchemaTool.php b/src/Tools/SchemaTool.php
index 13ce5ed6993..42b52df8c71 100644
--- a/src/Tools/SchemaTool.php
+++ b/src/Tools/SchemaTool.php
@@ -337,7 +337,7 @@ public function getSchemaFromMetadata(array $classes): Schema
 
             if (isset($class->table['uniqueConstraints'])) {
                 foreach ($class->table['uniqueConstraints'] as $indexName => $indexData) {
-                    $uniqIndex = new Index($indexName, $this->getIndexColumns($class, $indexData), true, false, [], $indexData['options'] ?? []);
+                    $uniqIndex = new Index('tmp__' . $indexName, $this->getIndexColumns($class, $indexData), true, false, [], $indexData['options'] ?? []);
 
                     foreach ($table->getIndexes() as $tableIndexName => $tableIndex) {
                         if ($tableIndex->isFulfilledBy($uniqIndex)) {
diff --git a/tests/Tests/ORM/Tools/SchemaToolTest.php b/tests/Tests/ORM/Tools/SchemaToolTest.php
index d917254721e..a1f3e77d70c 100644
--- a/tests/Tests/ORM/Tools/SchemaToolTest.php
+++ b/tests/Tests/ORM/Tools/SchemaToolTest.php
@@ -370,6 +370,27 @@ public function testConfigurationSchemaIgnoredEntity(): void
         self::assertTrue($schema->hasTable('first_entity'), 'Table first_entity should exist.');
         self::assertFalse($schema->hasTable('second_entity'), 'Table second_entity should not exist.');
     }
+
+    #[Group('GH-11314')]
+    public function testLoadUniqueConstraintWithoutName(): void
+    {
+        $em     = $this->getTestEntityManager();
+        $entity = $em->getClassMetadata(GH11314Entity::class);
+
+        $schemaTool = new SchemaTool($em);
+        $schema     = $schemaTool->getSchemaFromMetadata([$entity]);
+
+        self::assertTrue($schema->hasTable('GH11314Entity'));
+
+        $tableEntity = $schema->getTable('GH11314Entity');
+
+        self::assertTrue($tableEntity->hasIndex('uniq_2d81a3ed5bf54558875f7fd5'));
+
+        $tableIndex = $tableEntity->getIndex('uniq_2d81a3ed5bf54558875f7fd5');
+
+        self::assertTrue($tableIndex->isUnique());
+        self::assertSame(['field', 'anotherField'], $tableIndex->getColumns());
+    }
 }
 
 #[Table(options: ['foo' => 'bar', 'baz' => ['key' => 'val']])]
@@ -500,6 +521,21 @@ class IndexByFieldEntity
     public $fieldName;
 }
 
+#[Entity]
+#[UniqueConstraint(columns: ['field', 'anotherField'])]
+class GH11314Entity
+{
+    #[Column]
+    #[Id]
+    private int $id;
+
+    #[Column(name: 'field')]
+    private string $field;
+
+    #[Column(name: 'anotherField')]
+    private string $anotherField;
+}
+
 class IncorrectIndexByFieldEntity
 {
     /** @var int */