diff --git a/packages/guides/src/DependencyInjection/GuidesExtension.php b/packages/guides/src/DependencyInjection/GuidesExtension.php
index 89904c0d4..6db4af678 100644
--- a/packages/guides/src/DependencyInjection/GuidesExtension.php
+++ b/packages/guides/src/DependencyInjection/GuidesExtension.php
@@ -42,6 +42,7 @@
 use function is_int;
 use function is_string;
 use function pathinfo;
+use function trim;
 use function var_export;
 
 final class GuidesExtension extends Extension implements CompilerPassInterface, ConfigurationInterface, PrependExtensionInterface
@@ -68,12 +69,33 @@ static function ($value) {
                                         return var_export($value, true);
                                     }
 
+                                    if (is_string($value)) {
+                                        return trim($value, "'");
+                                    }
+
+                                    return $value;
+                                },
+                            )
+                            ->end()
+                        ->end()
+                        ->scalarNode('release')
+                            ->beforeNormalization()
+                            ->always(
+                            // We need to revert the phpize call in XmlUtils. Version is always a string!
+                                static function ($value) {
+                                    if (!is_int($value) && !is_string($value)) {
+                                        return var_export($value, true);
+                                    }
+
+                                    if (is_string($value)) {
+                                        return trim($value, "'");
+                                    }
+
                                     return $value;
                                 },
                             )
                             ->end()
                         ->end()
-                        ->scalarNode('release')->end()
                         ->scalarNode('copyright')->end()
                     ->end()
                 ->end()
diff --git a/tests/Integration/tests/configuration/config-project/expected/index.html b/tests/Integration/tests/configuration/config-project/expected/index.html
index a1b6deb4b..a6616fe41 100644
--- a/tests/Integration/tests/configuration/config-project/expected/index.html
+++ b/tests/Integration/tests/configuration/config-project/expected/index.html
@@ -10,7 +10,7 @@ <h1>Document Title</h1>
         <dd>Title</dd>
                                 <dt>version:</dt>
 
-        <dd>12.4</dd>
+        <dd>12.4.0</dd>
                                 <dt>release:</dt>
 
         <dd>12.4.9-dev</dd>
diff --git a/tests/Integration/tests/configuration/config-project/input/guides.xml b/tests/Integration/tests/configuration/config-project/input/guides.xml
index 08662d48c..f6cab3fc2 100644
--- a/tests/Integration/tests/configuration/config-project/input/guides.xml
+++ b/tests/Integration/tests/configuration/config-project/input/guides.xml
@@ -5,7 +5,7 @@
 >
     <project
             title="Title"
-            version="12.4"
+            version="12.4.0"
             release="12.4.9-dev"
             copyright="since 1998 phpDocumentor Team and Contributors"
     />
diff --git a/tests/Integration/tests/meta/version-from-guides-xml/input/guides.xml b/tests/Integration/tests/meta/version-from-guides-xml/input/guides.xml
index 608bf0953..66a4a6264 100644
--- a/tests/Integration/tests/meta/version-from-guides-xml/input/guides.xml
+++ b/tests/Integration/tests/meta/version-from-guides-xml/input/guides.xml
@@ -6,7 +6,7 @@
 >
     <project
             title="Render guides"
-            version="3.0"
+            version="'3.0'"
             release="3.0.0"
     />
 </guides>