diff --git a/emacs-manifest.scm b/emacs-manifest.scm
index b48835b..91830ea 100644
--- a/emacs-manifest.scm
+++ b/emacs-manifest.scm
@@ -40,4 +40,6 @@
        "emacs-guix"
        "emacs-loop"
        "emacs-caddyfile-mode"
-       "emacs-rufo"))
+       "emacs-rufo"
+       "emacs-zig-mode"
+       "tree-sitter-rust"))