diff --git a/components/expression_language/syntax.rst b/components/expression_language/syntax.rst
index 147782b4c9f..5b7ee72ec7a 100644
--- a/components/expression_language/syntax.rst
+++ b/components/expression_language/syntax.rst
@@ -19,6 +19,11 @@ The component supports:
 * **hashes** - using JSON-like notation (e.g. ``{ foo: 'bar' }``)
 * **booleans** - ``true`` and ``false``
 * **null** - ``null``
+* **exponential** - also known as scientific (e.g. ``1.99E+3`` or ``1e-2``)
+
+    .. versionadded:: 4.4
+    
+        The ``exponential`` literal was introduced in Symfony 4.4.
 
 .. caution::