diff --git a/README.md b/README.md
index 35819f4..2aaaea0 100644
--- a/README.md
+++ b/README.md
@@ -126,6 +126,8 @@ Emoji's for each entry indicate whether it is added to the [Fediverse Party](htt
 
 * [**go-mastodon**](https://github.com/mattn/go-mastodon): Mastodon client for Golang. `MIT, Go`
 
+* [**Hannibal**](https://github.com/benpate/hannibal): ActivityPub library for Golang. `Apache-2.0, Go`
+
 * :heavy_check_mark: [**hare-activity**](https://git.sr.ht/~torresjrjr/hare-activity) ([Fedi account](https://qoto.org/@torresjrjr)): Hare package provides a extensible implementation of the ActivityStreams 2.0 format and the ActivityPub protocols. `MPL, Hare`
 
 * :heavy_check_mark: [**http-signature**](https://github.com/mtti/http-signature): Implementation of the HTTP Signature scheme as used in ActivityPub. `Apache-2.0, Typescript`