diff --git a/src/Twig/EasyAdminTwigExtension.php b/src/Twig/EasyAdminTwigExtension.php
index 63df38b517..d1612b5446 100644
--- a/src/Twig/EasyAdminTwigExtension.php
+++ b/src/Twig/EasyAdminTwigExtension.php
@@ -14,6 +14,7 @@
 use Symfony\Contracts\Translation\TranslatableInterface;
 use Symfony\Contracts\Translation\TranslatorInterface;
 use Symfony\UX\Icons\Twig\UXIconRuntime;
+use Twig\DeprecatedCallableInfo;
 use Twig\Environment;
 use Twig\Error\RuntimeError;
 use Twig\Extension\AbstractExtension;
@@ -45,13 +46,13 @@ public function getFunctions(): array
     {
         return [
             new TwigFunction('ea_url', [$this, 'getAdminUrlGenerator']),
-            new TwigFunction('ea_csrf_token', [$this, 'renderCsrfToken']),
-            new TwigFunction('ea_call_function_if_exists', [$this, 'callFunctionIfExists'], ['needs_environment' => true, 'is_safe' => ['html' => true]]),
-            new TwigFunction('ea_create_field_layout', [$this, 'createFieldLayout']),
-            new TwigFunction('ea_importmap', [$this, 'renderImportmap'], ['is_safe' => ['html']]),
             new TwigFunction('ea_form_ealabel', null, ['node_class' => 'Symfony\Bridge\Twig\Node\SearchAndRenderBlockNode', 'is_safe' => ['html']]),
-            // TODO: remove this when Twig 3.15 is published and we can use the 'guard' tag
-            new TwigFunction('ea_ux_icon', [$this, 'renderIcon'], ['is_safe' => ['html']]),
+            // deprecated functions
+            new TwigFunction('ea_call_function_if_exists', [$this, 'callFunctionIfExists'], ['needs_environment' => true, 'is_safe' => ['html' => true], 'deprecation_info' => new DeprecatedCallableInfo('easycorp/easyadmin-bundle', '4.21.0', 'No alternative is provided because it\'s no longer needed thanks to the Twig guard tag.')]),
+            new TwigFunction('ea_create_field_layout', [$this, 'createFieldLayout'], ['deprecation_info' => new DeprecatedCallableInfo('easycorp/easyadmin-bundle', '4.8.0', 'No alternative is provided because it\'s no longer needed thanks to the new rendering engine')]),
+            new TwigFunction('ea_csrf_token', [$this, 'renderCsrfToken'], ['deprecation_info' => new DeprecatedCallableInfo('easycorp/easyadmin-bundle', '4.21.0', 'No alternative is provided because it\'s no longer needed thanks to the Twig guard tag.')]),
+            new TwigFunction('ea_importmap', [$this, 'renderImportmap'], ['is_safe' => ['html'], 'deprecation_info' => new DeprecatedCallableInfo('easycorp/easyadmin-bundle', '4.21.0', 'No alternative is provided because it\'s no longer needed thanks to the Twig guard tag.')]),
+            new TwigFunction('ea_ux_icon', [$this, 'renderIcon'], ['is_safe' => ['html'], 'deprecation_info' => new DeprecatedCallableInfo('easycorp/easyadmin-bundle', '4.21.0', 'No alternative is provided because it\'s no longer needed thanks to the Twig guard tag.')]),
         ];
     }
 
@@ -60,8 +61,9 @@ public function getFilters(): array
         return [
             new TwigFilter('ea_flatten_array', [$this, 'flattenArray']),
             new TwigFilter('ea_filesize', [$this, 'fileSize']),
-            new TwigFilter('ea_apply_filter_if_exists', [$this, 'applyFilterIfExists'], ['needs_environment' => true]),
             new TwigFilter('ea_as_string', [$this, 'representAsString']),
+            // deprecated filters
+            new TwigFilter('ea_apply_filter_if_exists', [$this, 'applyFilterIfExists'], ['needs_environment' => true, 'deprecation_info' => new DeprecatedCallableInfo('easycorp/easyadmin-bundle', '4.21.0', 'No alternative is provided because it\'s no longer needed thanks to the Twig guard tag.')]),
         ];
     }
 
@@ -216,12 +218,6 @@ public function renderCsrfToken(string $tokenId): string
 
     public function createFieldLayout(?FieldCollection $fieldDtos): FieldLayoutDto
     {
-        trigger_deprecation(
-            'easycorp/easyadmin-bundle',
-            '4.8.0',
-            'The "ea_create_field_layout()" Twig function is deprecated in favor of "ea_create_form_layout()" and it will be removed in 5.0.0.',
-        );
-
         return FormLayoutFactory::createFromFieldDtos($fieldDtos);
     }
 
diff --git a/templates/components/Icon.html.twig b/templates/components/Icon.html.twig
index a64c9da5d5..429ff53b34 100644
--- a/templates/components/Icon.html.twig
+++ b/templates/components/Icon.html.twig
@@ -6,7 +6,8 @@
     {% elseif icon.svgContents %}
         {{ icon.svgContents|raw }}
     {% else %}
-        {# TODO: replace this by a call to ux_icon() function directly when Twig 3.15 is released and we can use the 'guard' tag #}
-        {{ ea_ux_icon(icon.name, attributes.all) }}
+        {% guard function ux_icon %}
+            {{ ux_icon(icon.name, attributes.all) }}
+        {% endguard %}
     {% endif %}
 </span>
diff --git a/templates/crud/form_theme.html.twig b/templates/crud/form_theme.html.twig
index 9ac0f6441d..aada67fe88 100644
--- a/templates/crud/form_theme.html.twig
+++ b/templates/crud/form_theme.html.twig
@@ -362,7 +362,11 @@
             {% if download_uri|default('') is empty %}
                 <div class="ea-lightbox-thumbnail">
                     {% if formTypeOptions.imagine_pattern is defined and formTypeOptions.imagine_pattern is not empty %}
-                        <img style="cursor: initial" src="{{ (asset_helper is same as(true) ? asset(image_uri) : image_uri)|ea_apply_filter_if_exists('imagine_filter', formTypeOptions.imagine_pattern) }}">
+                        {% guard filter imagine_filter %}
+                            <img style="cursor: initial" src="{{ (asset_helper is same as(true) ? asset(image_uri) : image_uri)|imagine_filter(formTypeOptions.imagine_pattern) }}">
+                        {% else %}
+                            <img style="cursor: initial" src="{{ (asset_helper is same as(true) ? asset(image_uri) : image_uri) }}">
+                        {% endguard %}
                     {% else %}
                         <img style="cursor: initial" src="{{ asset_helper is same as(true) ? asset(image_uri) : image_uri }}">
                     {% endif %}
@@ -372,7 +376,11 @@
 
                 <a href="#" class="ea-lightbox-thumbnail" data-ea-lightbox-content-selector="#{{ _lightbox_id }}">
                     {% if formTypeOptions.imagine_pattern is defined and formTypeOptions.imagine_pattern is not empty %}
-                        <img src="{{ (asset_helper is same as(true) ? asset(image_uri) : image_uri)|ea_apply_filter_if_exists('imagine_filter', formTypeOptions.imagine_pattern) }}">
+                        {% guard filter imagine_filter %}
+                            <img src="{{ (asset_helper is same as(true) ? asset(image_uri) : image_uri)|imagine_filter(formTypeOptions.imagine_pattern) }}">
+                        {% else %}
+                            <img src="{{ (asset_helper is same as(true) ? asset(image_uri) : image_uri) }}">
+                        {% endguard %}
                     {% else %}
                         <img src="{{ asset_helper is same as(true) ? asset(image_uri) : image_uri }}">
                     {% endif %}
@@ -380,7 +388,11 @@
 
                 <div id="{{ _lightbox_id }}" class="ea-lightbox">
                     {% if formTypeOptions.imagine_pattern is defined and formTypeOptions.imagine_pattern is not empty %}
-                        <img src="{{ (asset_helper is same as(true) ? asset(download_uri) : download_uri)|ea_apply_filter_if_exists('imagine_filter', formTypeOptions.imagine_pattern) }}">
+                        {% guard filter imagine_filter %}
+                            <img src="{{ (asset_helper is same as(true) ? asset(download_uri) : download_uri)|imagine_filter(formTypeOptions.imagine_pattern) }}">
+                        {% else %}
+                            <img src="{{ (asset_helper is same as(true) ? asset(download_uri) : download_uri) }}">
+                        {% endguard %}
                     {% else %}
                         <img src="{{ asset_helper is same as(true) ? asset(download_uri) : download_uri }}">
                     {% endif %}
diff --git a/templates/crud/includes/_delete_form.html.twig b/templates/crud/includes/_delete_form.html.twig
index 8009519c83..8cd4aec70b 100644
--- a/templates/crud/includes/_delete_form.html.twig
+++ b/templates/crud/includes/_delete_form.html.twig
@@ -1,6 +1,8 @@
 {# @var ea \EasyCorp\Bundle\EasyAdminBundle\Context\AdminContext #}
 <form class="d-none" method="post" id="delete-form">
-    <input type="hidden" name="token" value="{{ ea_csrf_token('ea-delete') }}" />
+    {% guard function csrf_token %}
+        <input type="hidden" name="token" value="{{ csrf_token('ea-delete') }}" />
+    {% endguard %}
 </form>
 
 <div id="modal-delete" class="modal fade" tabindex="-1">
diff --git a/templates/includes/_css_assets.html.twig b/templates/includes/_css_assets.html.twig
index 39163445e6..2b62c9fe2d 100644
--- a/templates/includes/_css_assets.html.twig
+++ b/templates/includes/_css_assets.html.twig
@@ -1,7 +1,9 @@
 {# @var assets \EasyCorp\Bundle\EasyAdminBundle\Dto\AssetDto[] #}
 {% for css_asset in assets %}
     {% if css_asset.preload %}
-        <link rel="preload" href="{{ ea_call_function_if_exists('preload', asset(css_asset.value, css_asset.packageName), { as: 'style', nopush: css_asset.nopush }) }}"
+        {% guard function preload %}
+            <link rel="preload" href="{{ preload(asset(css_asset.value, css_asset.packageName), { as: 'style', nopush: css_asset.nopush }) }}"
+        {% endguard %}
         {% for attr, value in css_asset.htmlAttributes %}{{ attr }}="{{ value|e('html_attr') }}" {% endfor %}>
     {% else %}
         <link rel="stylesheet" href="{{ asset(css_asset.value, css_asset.packageName) }}"
diff --git a/templates/includes/_encore_link_tags.html.twig b/templates/includes/_encore_link_tags.html.twig
index 280db01aed..6b9ee849e1 100644
--- a/templates/includes/_encore_link_tags.html.twig
+++ b/templates/includes/_encore_link_tags.html.twig
@@ -1,4 +1,6 @@
 {# @var assets \EasyCorp\Bundle\EasyAdminBundle\Dto\AssetDto[] #}
 {% for encore_asset in assets %}
-    {{ ea_call_function_if_exists('encore_entry_link_tags', encore_asset.value, encore_asset.webpackPackageName, encore_asset.webpackEntrypointName, encore_asset.htmlAttributes) }}
+    {% guard function encore_entry_link_tags %}
+        {{ encore_entry_link_tags(encore_asset.value, encore_asset.webpackPackageName, encore_asset.webpackEntrypointName, encore_asset.htmlAttributes) }}
+    {% endguard %}
 {% endfor %}
diff --git a/templates/includes/_encore_script_tags.html.twig b/templates/includes/_encore_script_tags.html.twig
index 8ec60f1954..dfa7be57c3 100644
--- a/templates/includes/_encore_script_tags.html.twig
+++ b/templates/includes/_encore_script_tags.html.twig
@@ -1,4 +1,6 @@
 {# @var assets \EasyCorp\Bundle\EasyAdminBundle\Dto\AssetDto[] #}
 {% for encore_asset in assets %}
-    {{ ea_call_function_if_exists('encore_entry_script_tags', encore_asset.value, encore_asset.webpackPackageName, encore_asset.webpackEntrypointName, encore_asset.htmlAttributes) }}
+    {% guard function encore_entry_script_tags %}
+        {{ encore_entry_script_tags(encore_asset.value, encore_asset.webpackPackageName, encore_asset.webpackEntrypointName, encore_asset.htmlAttributes) }}
+    {% endguard %}
 {% endfor %}
diff --git a/templates/includes/_importmap.html.twig b/templates/includes/_importmap.html.twig
index 62f10ff322..3062b8cefa 100644
--- a/templates/includes/_importmap.html.twig
+++ b/templates/includes/_importmap.html.twig
@@ -1,2 +1,4 @@
 {# @var assets \EasyCorp\Bundle\EasyAdminBundle\Dto\AssetDto[] #}
-{{ ea_importmap(assets|map(asset => asset.value)) }}
+{% guard function importmap %}
+    {{ importmap(assets|map(asset => asset.value)) }}
+{% endguard %}
diff --git a/templates/includes/_js_assets.html.twig b/templates/includes/_js_assets.html.twig
index d29e98cca2..9253c44247 100644
--- a/templates/includes/_js_assets.html.twig
+++ b/templates/includes/_js_assets.html.twig
@@ -1,7 +1,9 @@
 {# @var assets \EasyCorp\Bundle\EasyAdminBundle\Dto\AssetDto[] #}
 {% for js_asset in assets %}
     {% if js_asset.preload %}
-        <link rel="preload" href="{{ ea_call_function_if_exists('preload', asset(js_asset.value, js_asset.packageName), { as: 'script', nopush: js_asset.nopush }) }}"
+        {% guard function preload %}
+            <link rel="preload" href="{{ preload(asset(js_asset.value, js_asset.packageName), { as: 'script', nopush: js_asset.nopush }) }}"
+        {% endguard %}
         {% for attr, value in js_asset.htmlAttributes %}{{ attr }}="{{ value|e('html_attr') }}" {% endfor %}>
     {% else %}
         <script src="{{ asset(js_asset.value, js_asset.packageName) }}" {{ js_asset.async ? 'async' }} {{ js_asset.defer ? 'defer' }}