diff --git a/rosenthal/packages/authentication.scm b/rosenthal/packages/authentication.scm
new file mode 100644
index 0000000..5957388
--- /dev/null
+++ b/rosenthal/packages/authentication.scm
@@ -0,0 +1,44 @@
+;; SPDX-FileCopyrightText: 2023 Hilton Chain <hako@ultrarare.space>
+;;
+;; SPDX-License-Identifier: GPL-3.0-or-later
+
+(define-module (rosenthal packages authentication)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix build-system go)
+  #:use-module (guix git-download)
+  #:use-module (guix packages)
+  #:use-module (gnu packages golang)
+  #:use-module (rosenthal packages golang))
+
+(define-public misso
+  (let ((commit "33faca42450f78bab2cac0421d693d8742b34969")
+        (revision "0"))
+    (package
+      (name "misso")
+      (version (git-version "0" revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/nyaone/misso")
+                      (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "0yn9i9djbnlvxxiyrbm5kbgd2klpl59374kr60hgjz6qw1pik6gf"))))
+      (build-system go-build-system)
+      (arguments
+       (list #:go go-1.19
+             #:install-source? #f
+             #:import-path "misso"))
+      (propagated-inputs
+       (list go-github-com-gin-gonic-gin
+             go-github-com-go-redis-redis-v9
+             go-github-com-ory-hydra-client-go-v2
+             go-go-uber-org-zap
+             go-gopkg-in-yaml-v3))
+      (home-page "https://sso.nya.one/")
+      (synopsis "Single-Sign-On with Misskey")
+      (description
+       "This package provides @code{MiSSO}, a Single-Sign-On system for
+@code{Misskey}.")
+      (license license:agpl3))))