/** @var Collator */
private $mainCollator;
- /** @var */
+ /** @var string */
private $locale;
/** @var Language */
}
$cache = wfGetCache( CACHE_ANYTHING );
- $cacheKey = wfMemcKey( 'first-letters', $this->locale, $this->digitTransformLanguage->getCode() );
+ $cacheKey = wfMemcKey(
+ 'first-letters',
+ $this->locale,
+ $this->digitTransformLanguage->getCode(),
+ self::getICUVersion()
+ );
$cacheEntry = $cache->get( $cacheKey );
if ( $cacheEntry && isset( $cacheEntry['version'] )