diff --git a/CssSelectorConverter.php b/CssSelectorConverter.php
index 7120a29..a90cb8d 100644
--- a/CssSelectorConverter.php
+++ b/CssSelectorConverter.php
@@ -26,6 +26,8 @@
  */
 class CssSelectorConverter
 {
+    public static int $maxCachedItems = 1024;
+
     private Translator $translator;
     private array $cache;
 
@@ -62,6 +64,21 @@ public function __construct(bool $html = true)
      */
     public function toXPath(string $cssExpr, string $prefix = 'descendant-or-self::'): string
     {
-        return $this->cache[$prefix][$cssExpr] ??= $this->translator->cssToXPath($cssExpr, $prefix);
+        $cacheKey = $prefix."\0".$cssExpr;
+
+        if (isset($this->cache[$cacheKey])) {
+            // Move the item last in cache (LRU)
+            $value = $this->cache[$cacheKey];
+            unset($this->cache[$cacheKey]);
+
+            return $this->cache[$cacheKey] = $value;
+        }
+
+        if (\count($this->cache) >= self::$maxCachedItems) {
+            // Evict the oldest entry
+            unset($this->cache[array_key_first($this->cache)]);
+        }
+
+        return $this->cache[$cacheKey] = $this->translator->cssToXPath($cssExpr, $prefix);
     }
 }
diff --git a/Tests/CssSelectorConverterTest.php b/Tests/CssSelectorConverterTest.php
index 1d4dbb7..26707cd 100644
--- a/Tests/CssSelectorConverterTest.php
+++ b/Tests/CssSelectorConverterTest.php
@@ -52,6 +52,37 @@ public function testParseExceptions()
         (new CssSelectorConverter())->toXPath('h1:');
     }
 
+    public function testLruCacheMovesRecentlyUsedToEnd()
+    {
+        CssSelectorConverter::$maxCachedItems = 5;
+        $htmlCacheProperty = new \ReflectionProperty(CssSelectorConverter::class, 'htmlCache');
+        $htmlCacheProperty->setValue(null, []);
+
+        $converter = new CssSelectorConverter(true);
+
+        // Fill cache with 5 entries (h0-h4)
+        for ($i = 0; $i < 5; ++$i) {
+            $converter->toXPath("h$i");
+        }
+
+        // Access h0 to move it to end (most recently used)
+        $converter->toXPath('h0');
+
+        // Trigger eviction
+        $converter->toXPath('h5');
+
+        $cache = $htmlCacheProperty->getValue();
+
+        // h0 was accessed recently (moved to end), so it survives eviction
+        $this->assertArrayHasKey("descendant-or-self::\0h0", $cache);
+        // h5 is the newest entry
+        $this->assertArrayHasKey("descendant-or-self::\0h5", $cache);
+        // h1 was the oldest untouched entry, should be evicted
+        $this->assertArrayNotHasKey("descendant-or-self::\0h1", $cache);
+
+        CssSelectorConverter::$maxCachedItems = 1024;
+    }
+
     #[DataProvider('getCssToXPathWithoutPrefixTestData')]
     public function testCssToXPathWithoutPrefix($css, $xpath)
     {