diff --git a/core/siren-core-packages.el b/core/siren-core-packages.el
index 5315e30..440c9e1 100644
--- a/core/siren-core-packages.el
+++ b/core/siren-core-packages.el
@@ -47,8 +47,10 @@
   (add-to-list 'straight-x-pinned-packages
                `(,package . ,gitsha)))
 
-;; Make use-package available.
-(straight-use-package 'use-package)
+;; Ensure use-package available, only installing it if it not included with the
+;; current Emacs version.
+(if (not (fboundp 'use-package))
+    (straight-use-package 'use-package))
 
 ;; Make general.el keybinding helpers available.
 (use-package general)