diff --git a/README b/README
index 1306510..8c7fb6d 100644
--- a/README
+++ b/README
@@ -25,6 +25,8 @@ IO-Compress supports reading and writing of the following compressed data format
 There are a number of companion modules for IO-Compress that extend
 the suite of compression formats available.
 
+ * IO-Compress-Zstd
+   Adds support for zstd (Zstandard).
  * IO-Compress-Lzma
    Adds support for lzma, xz and lzip.
  * IO-Compress-Lzf
diff --git a/lib/IO/Uncompress/AnyUncompress.pm b/lib/IO/Uncompress/AnyUncompress.pm
index 3985fb9..482da28 100644
--- a/lib/IO/Uncompress/AnyUncompress.pm
+++ b/lib/IO/Uncompress/AnyUncompress.pm
@@ -333,6 +333,8 @@ The formats supported are:
 
 =item zip
 
+=item zstd (Zstandard)
+
 =item bzip2
 
 =item lzop
@@ -1079,3 +1081,4 @@ Copyright (c) 2005-2020 Paul Marquess. All rights reserved.
 
 This program is free software; you can redistribute it and/or
 modify it under the same terms as Perl itself.
+