diff --git a/src/PackageVersions/Installer.php b/src/PackageVersions/Installer.php
index 4994efa..d590f64 100644
--- a/src/PackageVersions/Installer.php
+++ b/src/PackageVersions/Installer.php
@@ -50,9 +50,7 @@ final class Installer implements ComposerV2Plugin, EventSubscriberInterface
 %s
 {
     /**
-     * @deprecated please use {@see \Composer\InstalledVersions::getRootPackage()} instead. The
-     *             equivalent expression for this constant's contents is
-     *             `\Composer\InstalledVersions::getRootPackage()['name']`.
+     * @deprecated please use {@see self::rootPackageName()} instead.
      *             This constant will be removed in version 2.0.0.
      */
     public const ROOT_PACKAGE_NAME = '%s';
@@ -61,6 +59,17 @@ private function __construct()
     {
     }
 
+    /**
+     * @psalm-pure
+     *
+     * @psalm-suppress ImpureMethodCall we know that {@see InstalledVersions} interaction does not
+     *                                  cause any side effects here.
+     */
+    public static function rootPackageName() : string
+    {
+        return InstalledVersions::getRootPackage()['name'];
+    }
+
     /**
      * @throws OutOfBoundsException If a version cannot be located.
      *
diff --git a/src/PackageVersions/Versions.php b/src/PackageVersions/Versions.php
index ad1c16a..83033ac 100644
--- a/src/PackageVersions/Versions.php
+++ b/src/PackageVersions/Versions.php
@@ -18,9 +18,7 @@
 final class Versions
 {
     /**
-     * @deprecated please use {@see \Composer\InstalledVersions::getRootPackage()} instead. The
-     *             equivalent expression for this constant's contents is
-     *             `\Composer\InstalledVersions::getRootPackage()['name']`.
+     * @deprecated please use {@see self::rootPackageName()} instead.
      *             This constant will be removed in version 2.0.0.
      */
     public const ROOT_PACKAGE_NAME = 'unknown/root-package@UNKNOWN';
@@ -29,6 +27,17 @@ private function __construct()
     {
     }
 
+    /**
+     * @psalm-pure
+     *
+     * @psalm-suppress ImpureMethodCall we know that {@see InstalledVersions} interaction does not
+     *                                  cause any side effects here.
+     */
+    public static function rootPackageName() : string
+    {
+        return InstalledVersions::getRootPackage()['name'];
+    }
+
     /**
      * @throws OutOfBoundsException if a version cannot be located.
      *
diff --git a/test/PackageVersionsTest/InstallerTest.php b/test/PackageVersionsTest/InstallerTest.php
index 587f618..6ed1d86 100644
--- a/test/PackageVersionsTest/InstallerTest.php
+++ b/test/PackageVersionsTest/InstallerTest.php
@@ -278,9 +278,7 @@ public function testDumpVersionsClass(): void
 final class Versions
 {
     /**
-     * @deprecated please use {@see \Composer\InstalledVersions::getRootPackage()} instead. The
-     *             equivalent expression for this constant's contents is
-     *             `\Composer\InstalledVersions::getRootPackage()['name']`.
+     * @deprecated please use {@see self::rootPackageName()} instead.
      *             This constant will be removed in version 2.0.0.
      */
     public const ROOT_PACKAGE_NAME = 'root/package';
@@ -289,6 +287,17 @@ private function __construct()
     {
     }
 
+    /**
+     * @psalm-pure
+     *
+     * @psalm-suppress ImpureMethodCall we know that {@see InstalledVersions} interaction does not
+     *                                  cause any side effects here.
+     */
+    public static function rootPackageName() : string
+    {
+        return InstalledVersions::getRootPackage()['name'];
+    }
+
     /**
      * @throws OutOfBoundsException If a version cannot be located.
      *
@@ -383,9 +392,7 @@ public function testDumpVersionsClassNoDev(): void
 final class Versions
 {
     /**
-     * @deprecated please use {@see \Composer\InstalledVersions::getRootPackage()} instead. The
-     *             equivalent expression for this constant's contents is
-     *             `\Composer\InstalledVersions::getRootPackage()['name']`.
+     * @deprecated please use {@see self::rootPackageName()} instead.
      *             This constant will be removed in version 2.0.0.
      */
     public const ROOT_PACKAGE_NAME = 'root/package';
@@ -394,6 +401,17 @@ private function __construct()
     {
     }
 
+    /**
+     * @psalm-pure
+     *
+     * @psalm-suppress ImpureMethodCall we know that {@see InstalledVersions} interaction does not
+     *                                  cause any side effects here.
+     */
+    public static function rootPackageName() : string
+    {
+        return InstalledVersions::getRootPackage()['name'];
+    }
+
     /**
      * @throws OutOfBoundsException If a version cannot be located.
      *
@@ -492,9 +510,7 @@ public function testDumpVersionsWithoutPackageSourceDetails(): void
 final class Versions
 {
     /**
-     * @deprecated please use {@see \Composer\InstalledVersions::getRootPackage()} instead. The
-     *             equivalent expression for this constant's contents is
-     *             `\Composer\InstalledVersions::getRootPackage()['name']`.
+     * @deprecated please use {@see self::rootPackageName()} instead.
      *             This constant will be removed in version 2.0.0.
      */
     public const ROOT_PACKAGE_NAME = 'root/package';
@@ -503,6 +519,17 @@ private function __construct()
     {
     }
 
+    /**
+     * @psalm-pure
+     *
+     * @psalm-suppress ImpureMethodCall we know that {@see InstalledVersions} interaction does not
+     *                                  cause any side effects here.
+     */
+    public static function rootPackageName() : string
+    {
+        return InstalledVersions::getRootPackage()['name'];
+    }
+
     /**
      * @throws OutOfBoundsException If a version cannot be located.
      *
@@ -902,9 +929,7 @@ public function testGetVersionsIsNotNormalizedForRootPackage(): void
 final class Versions
 {
     /**
-     * @deprecated please use {@see \Composer\InstalledVersions::getRootPackage()} instead. The
-     *             equivalent expression for this constant's contents is
-     *             `\Composer\InstalledVersions::getRootPackage()['name']`.
+     * @deprecated please use {@see self::rootPackageName()} instead.
      *             This constant will be removed in version 2.0.0.
      */
     public const ROOT_PACKAGE_NAME = 'root/package';
@@ -913,6 +938,17 @@ private function __construct()
     {
     }
 
+    /**
+     * @psalm-pure
+     *
+     * @psalm-suppress ImpureMethodCall we know that {@see InstalledVersions} interaction does not
+     *                                  cause any side effects here.
+     */
+    public static function rootPackageName() : string
+    {
+        return InstalledVersions::getRootPackage()['name'];
+    }
+
     /**
      * @throws OutOfBoundsException If a version cannot be located.
      *
diff --git a/test/PackageVersionsTest/VersionsTest.php b/test/PackageVersionsTest/VersionsTest.php
index 3b2f605..63d5ce7 100644
--- a/test/PackageVersionsTest/VersionsTest.php
+++ b/test/PackageVersionsTest/VersionsTest.php
@@ -13,11 +13,7 @@
 use function json_decode;
 use function uniqid;
 
-/**
- * @uses \PackageVersions\FallbackVersions
- *
- * @covers \PackageVersions\Versions
- */
+/** @covers \PackageVersions\Versions */
 final class VersionsTest extends TestCase
 {
     public function testValidVersions(): void
@@ -43,6 +39,12 @@ public function testCanRetrieveRootPackageVersion(): void
         self::assertMatchesRegularExpression('/^.+\@[0-9a-f]+$/', Versions::getVersion(Versions::ROOT_PACKAGE_NAME));
     }
 
+    /** @group #153 */
+    public function testCanRetrieveRootPackageName(): void
+    {
+        self::assertMatchesRegularExpression('/^[a-z0-9\\-]+\\/[a-z0-9\\-]+$/', Versions::rootPackageName());
+    }
+
     public function testInvalidVersionsAreRejected(): void
     {
         $this->expectException(OutOfBoundsException::class);