From b8fbd3789b99748401cc5685455ea15d23471110 Mon Sep 17 00:00:00 2001
From: Joshua Blum <hallo@joshuablum.de>
Date: Mon, 13 Apr 2026 15:00:13 +0200
Subject: [PATCH 1/3] Add `u` regex option to include unicode

---
 src/Query/Builder.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Query/Builder.php b/src/Query/Builder.php
index da081638833..e6c1511e83d 100644
--- a/src/Query/Builder.php
+++ b/src/Query/Builder.php
@@ -805,7 +805,7 @@ protected function filterTestLike($item, $like)
 
         $pattern = Pattern::sqlLikeToRegex($like);
 
-        return preg_match('/'.$pattern.'/im', (string) $item);
+        return preg_match('/'.$pattern.'/imu', (string) $item);
     }
 
     protected function filterTestNotLike($item, $like)
@@ -815,7 +815,7 @@ protected function filterTestNotLike($item, $like)
 
     protected function filterTestLikeRegex($item, $pattern)
     {
-        return preg_match("/{$pattern}/im", (string) $item);
+        return preg_match("/{$pattern}/imu", (string) $item);
     }
 
     protected function filterTestNotLikeRegex($item, $pattern)

From f92413459eead34c0d3916cb2f2a4160733a6f7c Mon Sep 17 00:00:00 2001
From: Joshua Blum <hallo@joshuablum.de>
Date: Mon, 13 Apr 2026 15:00:59 +0200
Subject: [PATCH 2/3] Same here, `mb_strtolower` to make it work with unicode

---
 src/Query/EloquentQueryBuilder.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Query/EloquentQueryBuilder.php b/src/Query/EloquentQueryBuilder.php
index 617d74b452d..a4bc452a232 100644
--- a/src/Query/EloquentQueryBuilder.php
+++ b/src/Query/EloquentQueryBuilder.php
@@ -175,7 +175,7 @@ public function where($column, $operator = null, $value = null, $boolean = 'and'
 
         if ($operator !== null && strtolower($operator) == 'like') {
             $grammar = $this->builder->getConnection()->getQueryGrammar();
-            $this->builder->whereRaw('LOWER('.$grammar->wrap($this->column($column)).') LIKE ?', strtolower($value), $boolean);
+            $this->builder->whereRaw('LOWER('.$grammar->wrap($this->column($column)).') LIKE ?', mb_strtolower($value), $boolean);
 
             return $this;
         }

From 19d2e6e39616a811cd0d9c1c4f7950e153fd10bd Mon Sep 17 00:00:00 2001
From: Joshua Blum <hallo@joshuablum.de>
Date: Mon, 13 Apr 2026 15:02:15 +0200
Subject: [PATCH 3/3] Add test

---
 tests/Data/Entries/EntryQueryBuilderTest.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tests/Data/Entries/EntryQueryBuilderTest.php b/tests/Data/Entries/EntryQueryBuilderTest.php
index 1d6b4371bd8..c8418199537 100644
--- a/tests/Data/Entries/EntryQueryBuilderTest.php
+++ b/tests/Data/Entries/EntryQueryBuilderTest.php
@@ -967,6 +967,9 @@ public function entries_are_found_using_like($like, $expected)
             '/ test',
             'test /',
             'test / test',
+            'Über dem Meer',
+            'über dem meer',
+            'Ärger',
         ])->each(function ($val, $i) {
             EntryFactory::id($i)
                 ->slug('post-'.$i)
@@ -999,6 +1002,10 @@ public static function likeProvider()
             '%/' => ['/', 'test /'],
             '/%' => ['/', '/ test'],
             '%/%' => ['/', '/ test', 'test /', 'test / test'],
+            '%über%' => ['Über dem Meer', 'über dem meer'],
+            '%Über%' => ['Über dem Meer', 'über dem meer'],
+            '%ärger%' => ['Ärger'],
+            '%Ärger%' => ['Ärger'],
         ])->mapWithKeys(function ($expected, $like) {
             return [$like => [$like, $expected]];
         });