diff --git a/docs/guides/2-cli.md b/docs/guides/2-cli.md
index f38944c80..7bfd2e5ab 100644
--- a/docs/guides/2-cli.md
+++ b/docs/guides/2-cli.md
@@ -33,7 +33,8 @@ Other options include:
           [string] [choices: "utf8", "ascii", "utf-8", "utf16le", "ucs2", "ucs-2", "base64", "latin1"] [default: "utf8"]
   -f, --format                   formatters to use for outputting results, more than one can be given joining them with
                                  a comma
-               [string] [choices: "json", "stylish", "junit", "html", "text", "teamcity", "pretty"] [default: "stylish"]
+        [string] [choices: "json", "stylish", "junit", "html", "text", "teamcity", "pretty", "github-actions"] [default:
+                                                                                                              "stylish"]
   -o, --output                   where to output results, can be a single file name, multiple "output.<format>" or
                                  missing to print to stdout                                                     [string]
       --stdin-filepath           path to a file to pretend that stdin comes from                                [string]