diff --git a/base/regex.jl b/base/regex.jl
index 6433eab40006d..b7e1909ece21e 100644
--- a/base/regex.jl
+++ b/base/regex.jl
@@ -11,6 +11,9 @@ const DEFAULT_MATCH_OPTS = PCRE.NO_UTF_CHECK
 An abstract type representing any sort of pattern matching expression
 (typically a regular expression). `AbstractPattern` objects can be used to
 match strings with [`match`](@ref).
+
+!!! compat "Julia 1.6"
+    This type is available in Julia 1.6 and later.
 """
 abstract type AbstractPattern end