diff --git a/.package-lists/guix-manifest.scm b/.package-lists/guix-manifest.scm
index 23111a65..c9e09a20 100644
--- a/.package-lists/guix-manifest.scm
+++ b/.package-lists/guix-manifest.scm
@@ -45,6 +45,7 @@
     "emacs-helm-org"
     "emacs-helm-org-contacts"
     "emacs-helm-pass"
+    "emacs-helm-sly"
     "emacs-helm-system-packages"
     "emacs-helpful"
     "emacs-hl-todo"
@@ -78,6 +79,9 @@
     "emacs-sly"
     "emacs-sly-asdf"
     "emacs-sly-quicklisp"
+    "emacs-sly-macrostep"
+    "emacs-sly-named-readtables"
+    ;; "emacs-sly-package-inferred" ; TODO: This package triggers an infinite recursion.
     "emacs-strace-mode"
     "emacs-suggest"
     "emacs-sx"