diff --git a/composer.json b/composer.json
index a16c084..5ab99f8 100644
--- a/composer.json
+++ b/composer.json
@@ -37,7 +37,7 @@
     "require": {
         "php": "^8.2",
         "edalzell/forma": "^2.0 || ^3.0",
-        "nesbot/carbon": "^2.0",
+        "nesbot/carbon": "^2.0 || ^3.0",
         "rlanvin/php-rrule": "^2.3.1",
         "spatie/calendar-links": "^1.0",
         "spatie/icalendar-generator": "^2.3.3",
diff --git a/src/Modifiers/IsEndOfWeek.php b/src/Modifiers/IsEndOfWeek.php
index bd9f5ab..d84e4ea 100755
--- a/src/Modifiers/IsEndOfWeek.php
+++ b/src/Modifiers/IsEndOfWeek.php
@@ -2,6 +2,8 @@
 
 namespace TransformStudios\Events\Modifiers;
 
+use Carbon\CarbonImmutable;
+use Composer\InstalledVersions;
 use Illuminate\Support\Carbon;
 use Statamic\Modifiers\Modifier;
 
@@ -9,6 +11,12 @@ class IsEndOfWeek extends Modifier
 {
     public function index($value, $params, $context)
     {
-        return Carbon::parse($value)->dayOfWeek == now()->endOfWeek()->dayOfWeek;
+        $date = CarbonImmutable::parse($value);
+
+        if (InstalledVersions::getVersion('nesbot/carbon') >= '3') {
+            $date->isSameDay($date->locale(Carbon::getLocale())->startOfWeek());
+        }
+
+        return $date->dayOfWeek == now()->endOfWeek()->dayOfWeek;
     }
 }
diff --git a/src/Modifiers/IsStartOfWeek.php b/src/Modifiers/IsStartOfWeek.php
index a5bdf26..5f32daa 100755
--- a/src/Modifiers/IsStartOfWeek.php
+++ b/src/Modifiers/IsStartOfWeek.php
@@ -2,6 +2,8 @@
 
 namespace TransformStudios\Events\Modifiers;
 
+use Carbon\CarbonImmutable;
+use Composer\InstalledVersions;
 use Illuminate\Support\Carbon;
 use Statamic\Modifiers\Modifier;
 
@@ -9,6 +11,12 @@ class IsStartOfWeek extends Modifier
 {
     public function index($value, $params, $context)
     {
-        return Carbon::parse($value)->dayOfWeek == now()->startOfWeek()->dayOfWeek;
+        $date = CarbonImmutable::parse($value);
+
+        if (InstalledVersions::getVersion('nesbot/carbon') >= '3') {
+            $date->isSameDay($date->locale(Carbon::getLocale())->startOfWeek());
+        }
+
+        return $date->dayOfWeek == now()->startOfWeek()->dayOfWeek;
     }
 }
diff --git a/src/ServiceProvider.php b/src/ServiceProvider.php
index 47f8bc8..1c60be4 100644
--- a/src/ServiceProvider.php
+++ b/src/ServiceProvider.php
@@ -2,6 +2,7 @@
 
 namespace TransformStudios\Events;
 
+use Composer\InstalledVersions;
 use Edalzell\Forma\Forma;
 use Illuminate\Support\Carbon;
 use Illuminate\Support\Facades\Artisan;
@@ -56,6 +57,10 @@ private function bootCarbon(): self
     {
         Carbon::setLocale(Site::current()->locale());
 
+        if (InstalledVersions::getVersion('nesbot/carbon') >= '3') {
+            return $this;
+        }
+
         /*
          Using these deprecated methods because I couldn't figure out another way to
          have the weekstart set based on the current locale.