diff --git a/Encoder/XmlEncoder.php b/Encoder/XmlEncoder.php
index 9e4902c7c..fe48a9372 100644
--- a/Encoder/XmlEncoder.php
+++ b/Encoder/XmlEncoder.php
@@ -301,7 +301,7 @@ private function parseXmlAttributes(\DOMNode $node, array $context = []): array
         $typeCastAttributes = (bool) ($context[self::TYPE_CAST_ATTRIBUTES] ?? $this->defaultContext[self::TYPE_CAST_ATTRIBUTES]);
 
         foreach ($node->attributes as $attr) {
-            if (!is_numeric($attr->nodeValue) || !$typeCastAttributes || (isset($attr->nodeValue[1]) && '0' === $attr->nodeValue[0])) {
+            if (!is_numeric($attr->nodeValue) || !$typeCastAttributes || (isset($attr->nodeValue[1]) && '0' === $attr->nodeValue[0] && '.' !== $attr->nodeValue[1])) {
                 $data['@'.$attr->nodeName] = $attr->nodeValue;
 
                 continue;
diff --git a/Tests/Encoder/XmlEncoderTest.php b/Tests/Encoder/XmlEncoderTest.php
index c1bb517ab..64e0673fa 100644
--- a/Tests/Encoder/XmlEncoderTest.php
+++ b/Tests/Encoder/XmlEncoderTest.php
@@ -276,10 +276,10 @@ public function testDecodeFloatAttribute()
     {
         $source = <<<XML
 <?xml version="1.0"?>
-<document index="-12.11">Name</document>
+<document index="12.11">Name</document>
 XML;
 
-        $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
+        $this->assertSame(['@index' => 12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
     public function testDecodeNegativeFloatAttribute()
@@ -292,6 +292,16 @@ public function testDecodeNegativeFloatAttribute()
         $this->assertSame(['@index' => -12.11, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
     }
 
+    public function testDecodeFloatAttributeWithZeroWholeNumber()
+    {
+        $source = <<<XML
+<?xml version="1.0"?>
+<document index="0.123">Name</document>
+XML;
+
+        $this->assertSame(['@index' => 0.123, '#' => 'Name'], $this->encoder->decode($source, 'xml'));
+    }
+
     public function testNoTypeCastAttribute()
     {
         $source = <<<XML
diff --git a/composer.json b/composer.json
index 19f3a0159..2eacd0e82 100644
--- a/composer.json
+++ b/composer.json
@@ -58,8 +58,5 @@
             "/Tests/"
         ]
     },
-    "minimum-stability": "dev",
-    "extra": {
-        "branch-version": "5.1"
-    }
+    "minimum-stability": "dev"
 }