doc: note what version "requires" was added in

diff --git a/doc/userguide/rules/meta.rst b/doc/userguide/rules/meta.rst
index 0e888add697ae035a6be7a5254b8d93e026e0a36..1ceb5fe834e092247dfb061a67cdfde97c331277 100644 (file)
--- a/doc/userguide/rules/meta.rst
+++ b/doc/userguide/rules/meta.rst
@@ -258,3 +258,4 @@ default to 0.
 The ``version`` may only be specified once, if specified more than
 once the rule will log an error and not be loaded.
 
+The ``requires`` keyword was introduced in Suricata 7.0.3 and 8.0.0.