diff --git a/radix/packages/emacs-xyz.scm b/radix/packages/emacs-xyz.scm
index e078f01..1cd120f 100644
--- a/radix/packages/emacs-xyz.scm
+++ b/radix/packages/emacs-xyz.scm
@@ -144,3 +144,23 @@ with EMMS.")
     (synopsis "Hide dotfiles in dired.")
     (description "A package to hide dotfiles in dired.")
     (license license:gpl3+)))
+
+(define-public emacs-isayt
+  (let ((commit "c7d1a16a3a3e8aeb7761303ed7d08bce2ce58b1e")
+        (revision "0"))
+    (package
+      (name "emacs-isayt")
+      (version (git-version "0" revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://gitlab.com/andreyorst/isayt.el")
+                      (commit commit)))
+                (sha256
+                 (base32
+                  "0c431vifw9rcblgh1h489zi9l79z7g8v5na06l97dqncidd4xhid"))))
+      (build-system emacs-build-system)
+      (home-page "https://gitlab.com/andreyorst/isayt.el")
+      (synopsis "Indent S-expressions as you type.")
+      (description "A package to indent s-expressions as you type.")
+      (license license:gpl3+))))