1 files changed, 1 insertions, 0 deletions

diff --git a/README.md b/README.md
index 3e5c4067..96bf9601 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,7 @@ Dokka supports the following command line arguments:
   * `-format` - the output format:
     * `html` - HTML (default)
     * `markdown` - Markdown
+    * `gfm` - GitHub-Flavored Markdown
     * `jekyll` - Markdown adapted for Jekyll sites
     * `javadoc` - Javadoc (showing how the project can be accessed from Java)
   * `-classpath` - list of directories or .jar files to include in the classpath (used for resolving references)