diff --git a/matrix_webhook/formatters.py b/matrix_webhook/formatters.py
index 9ed5a01..be3ad33 100644
--- a/matrix_webhook/formatters.py
+++ b/matrix_webhook/formatters.py
@@ -71,3 +71,12 @@ def gitlab_teams(data, headers):
 
     data["body"] = "  \n".join(body)
     return data
+
+
+def grn(data, headers):
+    """Pretty-print a github release notifier (grn) notification."""
+    version, title, author, package  = (
+         data[k] for k in ["version", "title", "author", "package_name"]
+    )
+    data["body"] = f"### {package} - {version}\n\n{title}\n\n[{author} released new version **{version}** for **{package}**](https://github.com/{package}/releases/tag/{version}).\n\n"
+    return data