diff --git a/UPGRADE-7.1.md b/UPGRADE-7.1.md
index ab4987276ad8..6a82eda9b7c9 100644
--- a/UPGRADE-7.1.md
+++ b/UPGRADE-7.1.md
@@ -1,6 +1,11 @@
 UPGRADE FROM 7.0 to 7.1
 =======================
 
+AssetMapper
+-----------
+
+ * Deprecate `ImportMapConfigReader::splitPackageNameAndFilePath()`, use `ImportMapEntry::splitPackageNameAndFilePath()` instead
+
 Cache
 -----
 
diff --git a/src/Symfony/Component/AssetMapper/CHANGELOG.md b/src/Symfony/Component/AssetMapper/CHANGELOG.md
index 628b3c148436..4b00ad8678d2 100644
--- a/src/Symfony/Component/AssetMapper/CHANGELOG.md
+++ b/src/Symfony/Component/AssetMapper/CHANGELOG.md
@@ -1,6 +1,11 @@
 CHANGELOG
 =========
 
+7.1
+---
+
+ * Deprecate `ImportMapConfigReader::splitPackageNameAndFilePath()`, use `ImportMapEntry::splitPackageNameAndFilePath()` instead
+
 6.4
 ---
 
diff --git a/src/Symfony/Component/AssetMapper/ImportMap/ImportMapConfigReader.php b/src/Symfony/Component/AssetMapper/ImportMap/ImportMapConfigReader.php
index a4cfd387ccf7..08633a0c4ab7 100644
--- a/src/Symfony/Component/AssetMapper/ImportMap/ImportMapConfigReader.php
+++ b/src/Symfony/Component/AssetMapper/ImportMap/ImportMapConfigReader.php
@@ -172,8 +172,13 @@ private function getRootDirectory(): string
         return \dirname($this->importMapConfigPath);
     }
 
+    /**
+     * @deprecated since Symfony 7.1, use ImportMapEntry::splitPackageNameAndFilePath() instead
+     */
     public static function splitPackageNameAndFilePath(string $packageName): array
     {
+        trigger_deprecation('symfony/asset-mapper', '7.1', 'The method "%s()" is deprecated and will be removed in 8.0. Use ImportMapEntry::splitPackageNameAndFilePath() instead.', __METHOD__);
+
         $filePath = '';
         $i = strpos($packageName, '/');
 
diff --git a/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapConfigReaderTest.php b/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapConfigReaderTest.php
index fbfb8b465466..acdcbd8c8d3f 100644
--- a/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapConfigReaderTest.php
+++ b/src/Symfony/Component/AssetMapper/Tests/ImportMap/ImportMapConfigReaderTest.php
@@ -12,6 +12,7 @@
 namespace Symfony\Component\AssetMapper\Tests\ImportMap;
 
 use PHPUnit\Framework\TestCase;
+use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 use Symfony\Component\AssetMapper\ImportMap\ImportMapConfigReader;
 use Symfony\Component\AssetMapper\ImportMap\ImportMapEntries;
 use Symfony\Component\AssetMapper\ImportMap\ImportMapEntry;
@@ -21,6 +22,8 @@
 
 class ImportMapConfigReaderTest extends TestCase
 {
+    use ExpectDeprecationTrait;
+
     private Filesystem $filesystem;
 
     protected function setUp(): void
@@ -162,4 +165,13 @@ public function testFindRootImportMapEntry()
         $this->assertSame('file2', $entry->importName);
         $this->assertSame('file2.js', $entry->path);
     }
+
+    /**
+     * @group legacy
+     */
+    public function testDeprecatedMethodTriggerDeprecation()
+    {
+        $this->expectDeprecation('Since symfony/asset-mapper 7.1: The method "Symfony\Component\AssetMapper\ImportMap\ImportMapConfigReader::splitPackageNameAndFilePath()" is deprecated and will be removed in 8.0. Use ImportMapEntry::splitPackageNameAndFilePath() instead.');
+        ImportMapConfigReader::splitPackageNameAndFilePath('foo');
+    }
 }
diff --git a/src/Symfony/Component/AssetMapper/composer.json b/src/Symfony/Component/AssetMapper/composer.json
index 584d9faeabbe..11f3786a4072 100644
--- a/src/Symfony/Component/AssetMapper/composer.json
+++ b/src/Symfony/Component/AssetMapper/composer.json
@@ -18,6 +18,7 @@
     "require": {
         "php": ">=8.2",
         "composer/semver": "^3.0",
+        "symfony/deprecation-contracts": "^2.1|^3",
         "symfony/filesystem": "^6.4|^7.0",
         "symfony/http-client": "^6.4|^7.0"
     },