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diff --git a/vendor/twig/twig/doc/filters/upper.rst b/vendor/twig/twig/doc/filters/upper.rst
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+``upper``
+=========
+
+The ``upper`` filter converts a value to uppercase:
+
+.. code-block:: jinja
+
+    {{ 'welcome'|upper }}
+
+    {# outputs 'WELCOME' #}